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-rw-r--r--doc/extension.rdoc2
1 files changed, 1 insertions, 1 deletions
diff --git a/doc/extension.rdoc b/doc/extension.rdoc
index a594d423a2..cac63a6517 100644
--- a/doc/extension.rdoc
+++ b/doc/extension.rdoc
@@ -309,7 +309,7 @@ rb_ary_to_ary(VALUE obj) ::
There are many functions to operate an array. They may dump core if other
types are given.
-rb_ary_aref(argc, VALUE *argv, VALUE ary) ::
+rb_ary_aref(int argc, const VALUE *argv, VALUE ary) ::
Equivalent to Array#[].