diff --git a/netwerk/cache2/CacheIOThread.cpp b/netwerk/cache2/CacheIOThread.cpp
index fe0a4ddb05..61fd6677c3 100644
--- a/netwerk/cache2/CacheIOThread.cpp
+++ b/netwerk/cache2/CacheIOThread.cpp
@@ -417,6 +417,7 @@ void CacheIOThread::ThreadFunc()
       threadInternal->SetObserver(this);
 
     mXPCOMThread = xpcomThread.forget().take();
+    nsCOMPtr<nsIThread> thread = NS_GetCurrentThread();
 
     lock.NotifyAll();
 
@@ -437,7 +438,6 @@ loopStart:
         bool processedEvent;
         nsresult rv;
         do {
-          nsIThread *thread = mXPCOMThread;
           rv = thread->ProcessNextEvent(false, &processedEvent);
 
           MOZ_ASSERT(mBlockingIOWatcher);