diff --git a/lib/util.js b/lib/util.js
index 8b9abaea..54d6d478 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -107,7 +107,7 @@
                 break;
             }
             
-            return isMatch;
+            return !!isMatch;
         };
         
         /**