diff --git a/lib/keytool.js b/lib/keytool.js
index 6d8f17e..9d197a2 100644
--- a/lib/keytool.js
+++ b/lib/keytool.js
@@ -36,7 +36,7 @@ var Keytool = function Keytool(keystore, storepass, options) {
         };
         var executable = opts.executable || 'keytool';
 
-        var storeargs = ['-noprompt', '-keystore', keystore, '-storepass', storepass, '-storetype', storetype];
+        var storeargs = ['-J-Duser.language=en', '-noprompt', '-keystore', keystore, '-storepass', storepass, '-storetype', storetype];
         args = args.concat(storeargs);
         if ('extraargs' in opts) {
             args = args.concat(opts.extraargs);