diff -Nru bison-3.0.2-old/src/getargs.c bison-3.0.2/src/getargs.c
--- bison-3.0.2-old/src/getargs.c	2013-08-03 00:35:13 +0900
+++ bison-3.0.2/src/getargs.c	2014-02-21 20:10:40 +0900
@@ -363,8 +363,8 @@
       /* Don't output this redundant message for English locales.
          Note we still output for 'C' so that it gets included in the
          man page.  */
-      const char *lc_messages = setlocale (LC_MESSAGES, NULL);
-      if (lc_messages && !STREQ (lc_messages, "en_"))
+      const char *lc_ctype = setlocale (LC_CTYPE, NULL);
+      if (lc_ctype && (!STREQ (lc_ctype, "en") || !strncmp (lc_ctype, "en_", 3)))
         /* TRANSLATORS: Replace LANG_CODE in this URL with your language
            code <http://translationproject.org/team/LANG_CODE.html> to
            form one of the URLs at http://translationproject.org/team/.