diff --git a/netwerk/test/TestFileTransport.cpp b/netwerk/test/TestFileTransport.cpp
index 20e18bc63fbf..60f68c979ca5 100644
--- a/netwerk/test/TestFileTransport.cpp
+++ b/netwerk/test/TestFileTransport.cpp
@@ -34,7 +34,7 @@
 
 static NS_DEFINE_CID(kFileTransportServiceCID, NS_FILETRANSPORTSERVICE_CID);
 static NS_DEFINE_CID(kEventQueueServiceCID, NS_EVENTQUEUESERVICE_CID);
-static NS_DEFINE_IID(kEventQueueCID, NS_EVENTQUEUE_CID);
+static NS_DEFINE_CID(kEventQueueCID, NS_EVENTQUEUE_CID);
 
 PRBool gDone = PR_FALSE;
 nsIEventQueue* gEventQ = nsnull;