diff --git a/acinclude.m4 b/acinclude.m4
index 408a46d38ab..9d1f0b2716d 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -2077,7 +2077,7 @@ AC_DEFUN([PHP_PROG_RE2C],[
   fi
   case $php_cv_re2c_version in
     ""|invalid[)]
-      AC_MSG_WARN([You will need re2c 0.9.11 or later if you want to regenerate PHP parsers.])
+      AC_MSG_WARN([You will need re2c 0.12.0 or later if you want to regenerate PHP parsers.])
       RE2C="exit 0;"
       ;;
   esac