diff --git a/project/static/widget-loader.js b/project/static/widget-loader.js
index d59778b..62bfb6e 100644
--- a/project/static/widget-loader.js
+++ b/project/static/widget-loader.js
@@ -85,10 +85,8 @@
             config.sizeWidth = false;
           }
 
-          if (googleTagManager) {
-            config.onMessage = function(messageData) {
-                onIframeMessage(messageData, googleTagManager);
-            }
+          config.onMessage = function(messageData) {
+              onIframeMessage(messageData, googleTagManager);
           }
 
           iFrameResize(config, iFrame);