diff --git a/content/base/src/nsInProcessTabChildGlobal.cpp b/content/base/src/nsInProcessTabChildGlobal.cpp
index be550d41fc3c..38d76b2b2715 100644
--- a/content/base/src/nsInProcessTabChildGlobal.cpp
+++ b/content/base/src/nsInProcessTabChildGlobal.cpp
@@ -101,7 +101,7 @@ nsInProcessTabChildGlobal::nsInProcessTabChildGlobal(nsIDocShell* aShell,
                                                      nsIContent* aOwner,
                                                      nsFrameMessageManager* aChrome)
 : mDocShell(aShell), mInitialized(false), mLoadingScript(false),
-  mDelayedDisconnect(false), mOwner(aOwner), mChromeMessageManager(aChrome)
+  mOwner(aOwner), mChromeMessageManager(aChrome)
 {
 
   // If owner corresponds to an <iframe mozbrowser> or <iframe mozapp>, we'll
@@ -234,11 +234,6 @@ nsInProcessTabChildGlobal::DelayedDisconnect()
   if (mListenerManager) {
     mListenerManager->Disconnect();
   }
-
-  if (!mLoadingScript) {
-  } else {
-    mDelayedDisconnect = true;
-  }
 }
 
 NS_IMETHODIMP_(nsIContent *)
@@ -329,8 +324,4 @@ nsInProcessTabChildGlobal::LoadFrameScript(const nsAString& aURL, bool aRunInGlo
   mLoadingScript = true;
   LoadFrameScriptInternal(aURL, aRunInGlobalScope);
   mLoadingScript = tmp;
-  if (!mLoadingScript && mDelayedDisconnect) {
-    mDelayedDisconnect = false;
-    Disconnect();
-  }
 }
diff --git a/content/base/src/nsInProcessTabChildGlobal.h b/content/base/src/nsInProcessTabChildGlobal.h
index 51eefc67812f..a006bbc8dd39 100644
--- a/content/base/src/nsInProcessTabChildGlobal.h
+++ b/content/base/src/nsInProcessTabChildGlobal.h
@@ -161,7 +161,6 @@ protected:
   nsCOMPtr<nsIDocShell> mDocShell;
   bool mInitialized;
   bool mLoadingScript;
-  bool mDelayedDisconnect;
 
   // Is this the message manager for an in-process <iframe mozbrowser> or
   // <iframe mozapp>?  This affects where events get sent, so it affects