--- a/dom/plugins/base/nsPluginStreamListenerPeer.cpp
+++ b/dom/plugins/base/nsPluginStreamListenerPeer.cpp
@@ -663,25 +663,16 @@ NS_IMETHODIMP
 nsPluginStreamListenerPeer::AsyncOnChannelRedirect(nsIChannel *oldChannel, nsIChannel *newChannel,
                                                    uint32_t flags, nsIAsyncVerifyRedirectCallback* callback)
 {
   // Disallow redirects if we don't have a stream listener.
   if (!mPStreamListener) {
     return NS_ERROR_FAILURE;
   }
 
-  nsCOMPtr<nsIAsyncVerifyRedirectCallback> proxyCallback =
-    new ChannelRedirectProxyCallback(this, callback, oldChannel, newChannel);
-
-  // Give NPAPI a chance to control redirects.
-  bool notificationHandled = mPStreamListener->HandleRedirectNotification(oldChannel, newChannel, proxyCallback);
-  if (notificationHandled) {
-    return NS_OK;
-  }
-
   // Don't allow cross-origin 307 POST redirects.
   nsCOMPtr<nsIHttpChannel> oldHttpChannel(do_QueryInterface(oldChannel));
   if (oldHttpChannel) {
     uint32_t responseStatus;
     nsresult rv = oldHttpChannel->GetResponseStatus(&responseStatus);
     if (NS_FAILED(rv)) {
       return rv;
     }
@@ -695,16 +686,25 @@ nsPluginStreamListenerPeer::AsyncOnChann
         rv = nsContentUtils::CheckSameOrigin(oldChannel, newChannel);
         if (NS_FAILED(rv)) {
           return rv;
         }
       }
     }
   }
 
+  nsCOMPtr<nsIAsyncVerifyRedirectCallback> proxyCallback =
+    new ChannelRedirectProxyCallback(this, callback, oldChannel, newChannel);
+
+  // Give NPAPI a chance to control redirects.
+  bool notificationHandled = mPStreamListener->HandleRedirectNotification(oldChannel, newChannel, proxyCallback);
+  if (notificationHandled) {
+    return NS_OK;
+  }
+
   // Fall back to channel event sink for window.
   nsCOMPtr<nsIChannelEventSink> channelEventSink;
   nsresult rv = GetInterfaceGlobal(NS_GET_IID(nsIChannelEventSink), getter_AddRefs(channelEventSink));
   if (NS_FAILED(rv)) {
     return rv;
   }
 
   return channelEventSink->AsyncOnChannelRedirect(oldChannel, newChannel, flags, proxyCallback);