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-rw-r--r--doc/crypto/EVP_PKEY_CTX_new.pod1
1 files changed, 1 insertions, 0 deletions
diff --git a/doc/crypto/EVP_PKEY_CTX_new.pod b/doc/crypto/EVP_PKEY_CTX_new.pod
index a9af867580..17d5e74b9d 100644
--- a/doc/crypto/EVP_PKEY_CTX_new.pod
+++ b/doc/crypto/EVP_PKEY_CTX_new.pod
@@ -26,6 +26,7 @@ during parameter generation of key genration for some algorithms.
EVP_PKEY_CTX_dup() duplicates the context B<ctx>.
EVP_PKEY_CTX_free() frees up the context B<ctx>.
+If B<ctx> is NULL, nothing is done.
=head1 NOTES