--- a/image/src/imgRequest.cpp
+++ b/image/src/imgRequest.cpp
@@ -338,17 +338,17 @@ void imgRequest::AdjustPriority(imgReque
   // XXX(darin): this is probably not the most optimal algorithm as we may want
   // to increase the priority of requests that have a lot of proxies.  the key
   // concern though is that image loads remain lower priority than other pieces
   // of content such as link clicks, CSS, and JS.
   //
   if (!GetStatusTracker().FirstConsumerIs(proxy))
     return;
 
-  nsCOMPtr<nsISupportsPriority> p = do_QueryInterface(mRequest);
+  nsCOMPtr<nsISupportsPriority> p = do_QueryInterface(mChannel);
   if (p)
     p->AdjustPriority(delta);
 }
 
 void imgRequest::SetIsInCache(bool incache)
 {
   LOG_FUNC_WITH_PARAM(gImgLog, "imgRequest::SetIsCacheable", "incache", incache);
   mIsInCache = incache;