diff --git a/lib/ace/test/mockrenderer.js b/lib/ace/test/mockrenderer.js
index 3c0c4342..ad8a24d7 100644
--- a/lib/ace/test/mockrenderer.js
+++ b/lib/ace/test/mockrenderer.js
@@ -161,4 +161,8 @@ MockRenderer.prototype.textToScreenCoordinates = function() {
     }
 };
 
+MockRenderer.prototype.adjustWrapLimit = function () {
+    
+};
+
 });