diff --git a/common/content/events.js b/common/content/events.js
index 5a1b1ad5..ddf874bc 100644
--- a/common/content/events.js
+++ b/common/content/events.js
@@ -1222,7 +1222,7 @@ function Events() //{{{
                     return;
                 }
 
-                if (config.focusChange())
+                if (config.focusChange)
                     return void config.focusChange(win);
 
                 urlbar = document.getElementById("urlbar");