diff --git a/ChangeLog b/ChangeLog
index 6d32fc11c9..7f4112763f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Sep 18 17:51:29 2012  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* ext/openssl/ossl_ssl.c (ossl_sslctx_attrs): add npn_select_db to
+	  suppress warning: instance variable @npn_select_cb not initialized
+
 Sun Sep 16 17:47:00 2012  Eric Hodel  <drbrain@segment7.net>
 
 	* tool/change_maker.rb:  Update svn detection for subversion 1.7's
diff --git a/ext/openssl/ossl_ssl.c b/ext/openssl/ossl_ssl.c
index 86ec206121..34df7d3d01 100644
--- a/ext/openssl/ossl_ssl.c
+++ b/ext/openssl/ossl_ssl.c
@@ -72,6 +72,7 @@ static const char *ossl_sslctx_attrs[] = {
 #endif
 #ifdef HAVE_OPENSSL_NPN_NEGOTIATED
     "npn_protocols",
+    "npn_select_cb",
 #endif
 };