diff --git a/NewMakefile.gmk b/NewMakefile.gmk
index ffdcbcc7dd094695fe1b0bc233e562d3baa89d40..a3389ff72788d3967ee8b61c8ed5b5d8f395b4a8 100644
--- a/NewMakefile.gmk
+++ b/NewMakefile.gmk
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -36,7 +36,7 @@ default:
 TEST_FOR_NON_GNUMAKE:sh=echo You are not using GNU make/gmake, this is a requirement. Check your path. 1>&2 && exit 1
 
 # Assume we have GNU make, but check version.
-ifeq ($(strip $(foreach v, 3.81 3.82 4.%, $(filter $v, $(MAKE_VERSION)))), )
+ifeq ($(strip $(foreach v, 3.81% 3.82% 4.%, $(filter $v, $(MAKE_VERSION)))), )
   $(error This version of GNU Make is too low ($(MAKE_VERSION)). Check your path, or upgrade to 3.81 or newer.)
 endif