diff --git a/dom/base/DOMRequestHelper.jsm b/dom/base/DOMRequestHelper.jsm
index 322509dda57..686169b3b27 100644
--- a/dom/base/DOMRequestHelper.jsm
+++ b/dom/base/DOMRequestHelper.jsm
@@ -159,12 +159,6 @@ DOMRequestIpcHelper.prototype = {
   },
 
   destroyDOMRequestHelper: function() {
-    if (this._destroyed) {
-      return;
-    }
-
-    this._destroyed = true;
-
     Services.obs.removeObserver(this, "inner-window-destroyed");
 
     if (this._listeners) {
@@ -178,11 +172,6 @@ DOMRequestIpcHelper.prototype = {
     this._listeners = null;
     this._requests = null;
     this._window = null;
-
-    // Objects inheriting from DOMRequestIPCHelper may have an uninit function.
-    if (this.uninit) {
-      this.uninit();
-    }
   },
 
   observe: function(aSubject, aTopic, aData) {