diff --git a/lib/MemberBuilderValidator.js b/lib/MemberBuilderValidator.js
index 875e6ad..9cce576 100644
--- a/lib/MemberBuilderValidator.js
+++ b/lib/MemberBuilderValidator.js
@@ -163,7 +163,7 @@ exports.prototype.validateMethod = function(
             );
         }
     }
-    else if ( keywords.override )
+    else if ( keywords[ 'override' ] )
     {
         // using the override keyword without a super method may indicate a bug,
         // but it shouldn't stop the class definition (it doesn't adversely