diff --git a/ChangeLog b/ChangeLog
index fb2fe6577e..a15025345a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Aug 17 04:54:25 2011  Martin Bosslet  <Martin.Bosslet@googlemail.com>
+
+	* ext/openssl/ossl_pkey.c: corrected docs, OpenSSL::PKey::DH does
+	  *not* support #sign/verify.
+
 Tue Aug 16 18:56:54 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* vm.c (ruby_threadptr_data_type): rename to hide.
diff --git a/ext/openssl/ossl_pkey.c b/ext/openssl/ossl_pkey.c
index b8480de0eb..f785e66c00 100644
--- a/ext/openssl/ossl_pkey.c
+++ b/ext/openssl/ossl_pkey.c
@@ -369,11 +369,11 @@ Init_ossl_pkey()
     /* Document-class: OpenSSL::PKey::PKey
      *
      * An abstract class that bundles signature creation (PKey#sign) and
-     * validation (PKey#verify) that is common to all implementations:
+     * validation (PKey#verify) that is common to all implementations except
+     * OpenSSL::PKey::DH
      * * OpenSSL::PKey::RSA
      * * OpenSSL::PKey::DSA
      * * OpenSSL::PKey::EC
-     * * OpenSSL::PKey::DH
      */
     cPKey = rb_define_class_under(mPKey, "PKey", rb_cObject);