Fix references to the license textky/clarify-license

Update the references to the file "LICENCE" with "COPYING".

The file LICENCE doesn't exist in ruby/ruby nor ruby/openssl. This has
been always the case since OpenSSL for Ruby 2 was merged to the ruby
tree as a standard library in 2003.

In OpenSSL for Ruby 2's CVS repository[1], the LICENCE file contained
an old version of the Ruby License, identical to the COPYING file that
was in Ruby's tree at that time (r4128[2]).

[1] http://cvs.savannah.gnu.org/viewvc/rubypki/ossl2/LICENCE?revision=1.1.1.1&view=markup
[2] https://github.com/ruby/ruby/blob/231247c010acba191b78ed2d1310c935e63ad919/COPYING

59 files changed, 59 insertions, 59 deletions

diff --git a/ext/openssl/extconf.rb b/ext/openssl/extconf.rb
index dd3732d0..563d339b 100644
--- a/ext/openssl/extconf.rb
+++ b/ext/openssl/extconf.rb
@@ -8,7 +8,7 @@
 
 = Licence
   This program is licensed under the same licence as Ruby.
-  (See the file 'LICENCE'.)
+  (See the file 'COPYING'.)
 =end
 
 require "mkmf"
diff --git a/ext/openssl/openssl_missing.c b/ext/openssl/openssl_missing.c
index 4415703d..5a6d23e1 100644
--- a/ext/openssl/openssl_missing.c
+++ b/ext/openssl/openssl_missing.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include RUBY_EXTCONF_H
 
diff --git a/ext/openssl/openssl_missing.h b/ext/openssl/openssl_missing.h
index 8629bfe5..0711f924 100644
--- a/ext/openssl/openssl_missing.h
+++ b/ext/openssl/openssl_missing.h
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #if !defined(_OSSL_OPENSSL_MISSING_H_)
 #define _OSSL_OPENSSL_MISSING_H_
diff --git a/ext/openssl/ossl.c b/ext/openssl/ossl.c
index 00eded55..59ad7d19 100644
--- a/ext/openssl/ossl.c
+++ b/ext/openssl/ossl.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 #include <stdarg.h> /* for ossl_raise */
diff --git a/ext/openssl/ossl.h b/ext/openssl/ossl.h
index 68d42b71..c3140ac3 100644
--- a/ext/openssl/ossl.h
+++ b/ext/openssl/ossl.h
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #if !defined(_OSSL_H_)
 #define _OSSL_H_
diff --git a/ext/openssl/ossl_asn1.c b/ext/openssl/ossl_asn1.c
index 71c452c8..bc44ebc4 100644
--- a/ext/openssl/ossl_asn1.c
+++ b/ext/openssl/ossl_asn1.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_asn1.h b/ext/openssl/ossl_asn1.h
index 939a96ce..f47e3539 100644
--- a/ext/openssl/ossl_asn1.h
+++ b/ext/openssl/ossl_asn1.h
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #if !defined(_OSSL_ASN1_H_)
 #define _OSSL_ASN1_H_
diff --git a/ext/openssl/ossl_bio.c b/ext/openssl/ossl_bio.c
index 42833d90..2ef20805 100644
--- a/ext/openssl/ossl_bio.c
+++ b/ext/openssl/ossl_bio.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_bio.h b/ext/openssl/ossl_bio.h
index da68c5e5..1b871f1c 100644
--- a/ext/openssl/ossl_bio.h
+++ b/ext/openssl/ossl_bio.h
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #if !defined(_OSSL_BIO_H_)
 #define _OSSL_BIO_H_
diff --git a/ext/openssl/ossl_bn.c b/ext/openssl/ossl_bn.c
index ce0d3ec7..7393fdea 100644
--- a/ext/openssl/ossl_bn.c
+++ b/ext/openssl/ossl_bn.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 /* modified by Michal Rokos <m.rokos@sh.cvut.cz> */
 #include "ossl.h"
diff --git a/ext/openssl/ossl_bn.h b/ext/openssl/ossl_bn.h
index 1cc041fc..800f84cb 100644
--- a/ext/openssl/ossl_bn.h
+++ b/ext/openssl/ossl_bn.h
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #if !defined(_OSSL_BN_H_)
 #define _OSSL_BN_H_
diff --git a/ext/openssl/ossl_cipher.c b/ext/openssl/ossl_cipher.c
index 1910a5cd..e362f4f1 100644
--- a/ext/openssl/ossl_cipher.c
+++ b/ext/openssl/ossl_cipher.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_cipher.h b/ext/openssl/ossl_cipher.h
index 2392d41c..07b50c3b 100644
--- a/ext/openssl/ossl_cipher.h
+++ b/ext/openssl/ossl_cipher.h
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #if !defined(_OSSL_CIPHER_H_)
 #define _OSSL_CIPHER_H_
diff --git a/ext/openssl/ossl_config.c b/ext/openssl/ossl_config.c
index 0e598b4d..55875028 100644
--- a/ext/openssl/ossl_config.c
+++ b/ext/openssl/ossl_config.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_config.h b/ext/openssl/ossl_config.h
index 4e604f1a..a254360c 100644
--- a/ext/openssl/ossl_config.h
+++ b/ext/openssl/ossl_config.h
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #ifndef OSSL_CONFIG_H
 #define OSSL_CONFIG_H
diff --git a/ext/openssl/ossl_digest.c b/ext/openssl/ossl_digest.c
index 1ae26a23..00ec8931 100644
--- a/ext/openssl/ossl_digest.c
+++ b/ext/openssl/ossl_digest.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_digest.h b/ext/openssl/ossl_digest.h
index 50bf5666..99771b8a 100644
--- a/ext/openssl/ossl_digest.h
+++ b/ext/openssl/ossl_digest.h
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #if !defined(_OSSL_DIGEST_H_)
 #define _OSSL_DIGEST_H_
diff --git a/ext/openssl/ossl_engine.c b/ext/openssl/ossl_engine.c
index 9e86321d..294d58ad 100644
--- a/ext/openssl/ossl_engine.c
+++ b/ext/openssl/ossl_engine.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_engine.h b/ext/openssl/ossl_engine.h
index cd548bee..f6f4ff4c 100644
--- a/ext/openssl/ossl_engine.h
+++ b/ext/openssl/ossl_engine.h
@@ -6,7 +6,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #if !defined(OSSL_ENGINE_H)
 #define OSSL_ENGINE_H
diff --git a/ext/openssl/ossl_hmac.c b/ext/openssl/ossl_hmac.c
index c485ba7e..b1163f61 100644
--- a/ext/openssl/ossl_hmac.c
+++ b/ext/openssl/ossl_hmac.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_hmac.h b/ext/openssl/ossl_hmac.h
index 7c51f472..17427587 100644
--- a/ext/openssl/ossl_hmac.h
+++ b/ext/openssl/ossl_hmac.h
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #if !defined(_OSSL_HMAC_H_)
 #define _OSSL_HMAC_H_
diff --git a/ext/openssl/ossl_ns_spki.c b/ext/openssl/ossl_ns_spki.c
index 9d70b5d8..e822d5e0 100644
--- a/ext/openssl/ossl_ns_spki.c
+++ b/ext/openssl/ossl_ns_spki.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_ns_spki.h b/ext/openssl/ossl_ns_spki.h
index 62ba8cb1..20d68576 100644
--- a/ext/openssl/ossl_ns_spki.h
+++ b/ext/openssl/ossl_ns_spki.h
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #if !defined(_OSSL_NS_SPKI_H_)
 #define _OSSL_NS_SPKI_H_
diff --git a/ext/openssl/ossl_ocsp.c b/ext/openssl/ossl_ocsp.c
index df986bb3..9796d44a 100644
--- a/ext/openssl/ossl_ocsp.c
+++ b/ext/openssl/ossl_ocsp.c
@@ -6,7 +6,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_ocsp.h b/ext/openssl/ossl_ocsp.h
index 6d2aac86..07da7d16 100644
--- a/ext/openssl/ossl_ocsp.h
+++ b/ext/openssl/ossl_ocsp.h
@@ -6,7 +6,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #if !defined(_OSSL_OCSP_H_)
 #define _OSSL_OCSP_H_
diff --git a/ext/openssl/ossl_pkcs12.c b/ext/openssl/ossl_pkcs12.c
index 164b2da4..81589fd8 100644
--- a/ext/openssl/ossl_pkcs12.c
+++ b/ext/openssl/ossl_pkcs12.c
@@ -1,6 +1,6 @@
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_pkcs12.h b/ext/openssl/ossl_pkcs12.h
index fe4f15ef..d4003e81 100644
--- a/ext/openssl/ossl_pkcs12.h
+++ b/ext/openssl/ossl_pkcs12.h
@@ -1,6 +1,6 @@
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #if !defined(_OSSL_PKCS12_H_)
 #define _OSSL_PKCS12_H_
diff --git a/ext/openssl/ossl_pkcs7.c b/ext/openssl/ossl_pkcs7.c
index 78dcbd66..ae498c45 100644
--- a/ext/openssl/ossl_pkcs7.c
+++ b/ext/openssl/ossl_pkcs7.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_pkcs7.h b/ext/openssl/ossl_pkcs7.h
index 3e1b0946..4cbbc6a1 100644
--- a/ext/openssl/ossl_pkcs7.h
+++ b/ext/openssl/ossl_pkcs7.h
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #if !defined(_OSSL_PKCS7_H_)
 #define _OSSL_PKCS7_H_
diff --git a/ext/openssl/ossl_pkey.c b/ext/openssl/ossl_pkey.c
index 013412c2..6af2245f 100644
--- a/ext/openssl/ossl_pkey.c
+++ b/ext/openssl/ossl_pkey.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_pkey.h b/ext/openssl/ossl_pkey.h
index 10669b82..37d828e0 100644
--- a/ext/openssl/ossl_pkey.h
+++ b/ext/openssl/ossl_pkey.h
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #if !defined(OSSL_PKEY_H)
 #define OSSL_PKEY_H
diff --git a/ext/openssl/ossl_pkey_dh.c b/ext/openssl/ossl_pkey_dh.c
index a231814a..00699b9b 100644
--- a/ext/openssl/ossl_pkey_dh.c
+++ b/ext/openssl/ossl_pkey_dh.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_pkey_dsa.c b/ext/openssl/ossl_pkey_dsa.c
index 058ce738..a7598d1e 100644
--- a/ext/openssl/ossl_pkey_dsa.c
+++ b/ext/openssl/ossl_pkey_dsa.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_pkey_rsa.c b/ext/openssl/ossl_pkey_rsa.c
index 389f76f3..7d986989 100644
--- a/ext/openssl/ossl_pkey_rsa.c
+++ b/ext/openssl/ossl_pkey_rsa.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_provider.c b/ext/openssl/ossl_provider.c
index 981c6ccd..d1f6c5d4 100644
--- a/ext/openssl/ossl_provider.c
+++ b/ext/openssl/ossl_provider.c
@@ -1,6 +1,6 @@
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_rand.c b/ext/openssl/ossl_rand.c
index 659dc818..774e7836 100644
--- a/ext/openssl/ossl_rand.c
+++ b/ext/openssl/ossl_rand.c
@@ -5,7 +5,7 @@
  * All rights reserved.
  *
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_rand.h b/ext/openssl/ossl_rand.h
index 8f77a3b2..874ab539 100644
--- a/ext/openssl/ossl_rand.h
+++ b/ext/openssl/ossl_rand.h
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #if !defined(_OSSL_RAND_H_)
 #define _OSSL_RAND_H_
diff --git a/ext/openssl/ossl_ssl.c b/ext/openssl/ossl_ssl.c
index 9f374b65..d7522cf0 100644
--- a/ext/openssl/ossl_ssl.c
+++ b/ext/openssl/ossl_ssl.c
@@ -7,7 +7,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_ssl.h b/ext/openssl/ossl_ssl.h
index 535c5609..a92985c6 100644
--- a/ext/openssl/ossl_ssl.h
+++ b/ext/openssl/ossl_ssl.h
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #if !defined(_OSSL_SSL_H_)
 #define _OSSL_SSL_H_
diff --git a/ext/openssl/ossl_ts.c b/ext/openssl/ossl_ts.c
index f698bdc7..a24ceb1c 100644
--- a/ext/openssl/ossl_ts.c
+++ b/ext/openssl/ossl_ts.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licenced under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_ts.h b/ext/openssl/ossl_ts.h
index 25fb0e1d..eeca3046 100644
--- a/ext/openssl/ossl_ts.h
+++ b/ext/openssl/ossl_ts.h
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licenced under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 
 #if !defined(_OSSL_TS_H_)
diff --git a/ext/openssl/ossl_x509.c b/ext/openssl/ossl_x509.c
index f8470703..9686fc1a 100644
--- a/ext/openssl/ossl_x509.c
+++ b/ext/openssl/ossl_x509.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_x509.h b/ext/openssl/ossl_x509.h
index 4fadfa6b..88e3f16a 100644
--- a/ext/openssl/ossl_x509.h
+++ b/ext/openssl/ossl_x509.h
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #if !defined(_OSSL_X509_H_)
 #define _OSSL_X509_H_
diff --git a/ext/openssl/ossl_x509attr.c b/ext/openssl/ossl_x509attr.c
index d1d8bb5e..be525c9e 100644
--- a/ext/openssl/ossl_x509attr.c
+++ b/ext/openssl/ossl_x509attr.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_x509cert.c b/ext/openssl/ossl_x509cert.c
index aa6b9bb7..0c2355d8 100644
--- a/ext/openssl/ossl_x509cert.c
+++ b/ext/openssl/ossl_x509cert.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_x509crl.c b/ext/openssl/ossl_x509crl.c
index 80e29f9d..368270ce 100644
--- a/ext/openssl/ossl_x509crl.c
+++ b/ext/openssl/ossl_x509crl.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_x509ext.c b/ext/openssl/ossl_x509ext.c
index 192d09bd..7f47cd7c 100644
--- a/ext/openssl/ossl_x509ext.c
+++ b/ext/openssl/ossl_x509ext.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_x509name.c b/ext/openssl/ossl_x509name.c
index 9591912f..5060be92 100644
--- a/ext/openssl/ossl_x509name.c
+++ b/ext/openssl/ossl_x509name.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_x509req.c b/ext/openssl/ossl_x509req.c
index f0581851..37ba0372 100644
--- a/ext/openssl/ossl_x509req.c
+++ b/ext/openssl/ossl_x509req.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_x509revoked.c b/ext/openssl/ossl_x509revoked.c
index 108447c8..5b82470c 100644
--- a/ext/openssl/ossl_x509revoked.c
+++ b/ext/openssl/ossl_x509revoked.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/ext/openssl/ossl_x509store.c b/ext/openssl/ossl_x509store.c
index f27381ca..31328ec4 100644
--- a/ext/openssl/ossl_x509store.c
+++ b/ext/openssl/ossl_x509store.c
@@ -5,7 +5,7 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #include "ossl.h"
 
diff --git a/lib/openssl.rb b/lib/openssl.rb
index 8a342f15..f5ca956d 100644
--- a/lib/openssl.rb
+++ b/lib/openssl.rb
@@ -7,7 +7,7 @@
 
 = Licence
   This program is licensed under the same licence as Ruby.
-  (See the file 'LICENCE'.)
+  (See the file 'COPYING'.)
 =end
 
 require 'openssl.so'
diff --git a/lib/openssl/bn.rb b/lib/openssl/bn.rb
index 0a5e11b4..e4889a14 100644
--- a/lib/openssl/bn.rb
+++ b/lib/openssl/bn.rb
@@ -10,7 +10,7 @@
 #
 # = Licence
 # This program is licensed under the same licence as Ruby.
-# (See the file 'LICENCE'.)
+# (See the file 'COPYING'.)
 #++
 
 module OpenSSL
diff --git a/lib/openssl/buffering.rb b/lib/openssl/buffering.rb
index 68aa7bc9..457991d2 100644
--- a/lib/openssl/buffering.rb
+++ b/lib/openssl/buffering.rb
@@ -8,7 +8,7 @@
 #
 #= Licence
 #  This program is licensed under the same licence as Ruby.
-#  (See the file 'LICENCE'.)
+#  (See the file 'COPYING'.)
 #++
 
 ##
diff --git a/lib/openssl/cipher.rb b/lib/openssl/cipher.rb
index 8ad8c35d..ab75ac8e 100644
--- a/lib/openssl/cipher.rb
+++ b/lib/openssl/cipher.rb
@@ -9,7 +9,7 @@
 #
 # = Licence
 # This program is licensed under the same licence as Ruby.
-# (See the file 'LICENCE'.)
+# (See the file 'COPYING'.)
 #++
 
 module OpenSSL
diff --git a/lib/openssl/digest.rb b/lib/openssl/digest.rb
index 0f35ddad..5cda1e93 100644
--- a/lib/openssl/digest.rb
+++ b/lib/openssl/digest.rb
@@ -9,7 +9,7 @@
 #
 # = Licence
 # This program is licensed under the same licence as Ruby.
-# (See the file 'LICENCE'.)
+# (See the file 'COPYING'.)
 #++
 
 module OpenSSL
diff --git a/lib/openssl/marshal.rb b/lib/openssl/marshal.rb
index af564719..eb8eda47 100644
--- a/lib/openssl/marshal.rb
+++ b/lib/openssl/marshal.rb
@@ -9,7 +9,7 @@
 #
 # = Licence
 # This program is licensed under the same licence as Ruby.
-# (See the file 'LICENCE'.)
+# (See the file 'COPYING'.)
 #++
 module OpenSSL
   module Marshal
diff --git a/lib/openssl/ssl.rb b/lib/openssl/ssl.rb
index d28bf1a3..2186f5f4 100644
--- a/lib/openssl/ssl.rb
+++ b/lib/openssl/ssl.rb
@@ -7,7 +7,7 @@
 
 = Licence
   This program is licensed under the same licence as Ruby.
-  (See the file 'LICENCE'.)
+  (See the file 'COPYING'.)
 =end
 
 require "openssl/buffering"
diff --git a/lib/openssl/x509.rb b/lib/openssl/x509.rb
index f973f4f4..b6672742 100644
--- a/lib/openssl/x509.rb
+++ b/lib/openssl/x509.rb
@@ -9,7 +9,7 @@
 #
 # = Licence
 # This program is licensed under the same licence as Ruby.
-# (See the file 'LICENCE'.)
+# (See the file 'COPYING'.)
 #++
 
 require_relative 'marshal'