diff --git a/toolkit/modules/debug.js b/toolkit/modules/debug.js
--- a/toolkit/modules/debug.js
+++ b/toolkit/modules/debug.js
@@ -39,17 +39,17 @@ function NS_ASSERT(condition, message) {
 
   var releaseBuild = true;
   var defB = Services.prefs.getDefaultBranch(null);
   try {
     switch (defB.getCharPref("app.update.channel")) {
       case "nightly":
       case "aurora":
       case "beta":
-      case "default":
+      // case "default":
         releaseBuild = false;
     }
   } catch (ex) {}
 
   var assertionText = "ASSERT: " + message + "\n";
 
   // Report the error to the console
   Cu.reportError(assertionText);
