diff --git a/guacamole-common-js/src/main/webapp/modules/Client.js b/guacamole-common-js/src/main/webapp/modules/Client.js
index a3ea4c068..006a262b4 100644
--- a/guacamole-common-js/src/main/webapp/modules/Client.js
+++ b/guacamole-common-js/src/main/webapp/modules/Client.js
@@ -196,8 +196,7 @@ Guacamole.Client = function(tunnel) {
             }
 
             // Invoke callback now that the state is ready
-            if (callback)
-                callback(state);
+            callback(state);
 
         });