diff --git a/lib/Firebug/firebugx.js b/lib/Firebug/firebugx.js
index 4c8b30f762..f0a34df81b 100644
--- a/lib/Firebug/firebugx.js
+++ b/lib/Firebug/firebugx.js
@@ -1,9 +1,10 @@
+(function() {
+    if (!window.console || !console.firebug) {
+        var names = ["log", "debug", "info", "warn", "error", "assert", "dir", "dirxml",
+        "group", "groupEnd", "time", "timeEnd", "count", "trace", "profile", "profileEnd"];
 
-if (!window.console || !console.firebug) {
-    var names = ["log", "debug", "info", "warn", "error", "assert", "dir", "dirxml",
-    "group", "groupEnd", "time", "timeEnd", "count", "trace", "profile", "profileEnd"];
-
-    window.console = {};
-    for (var i = 0; i < names.length; ++i)
-        window.console[names[i]] = function() {}
-}
+        window.console = {};
+        for (var i = 0; i < names.length; ++i)
+            window.console[names[i]] = function() {}
+    }
+})();