diff --git a/netwerk/base/ThrottleQueue.cpp b/netwerk/base/ThrottleQueue.cpp
index 80a5f7675a..05711c1a1c 100644
--- a/netwerk/base/ThrottleQueue.cpp
+++ b/netwerk/base/ThrottleQueue.cpp
@@ -8,6 +8,7 @@
 #include "nsISeekableStream.h"
 #include "nsIEventTarget.h"
 #include "nsIAsyncInputStream.h"
+#include "nsSocketTransportService2.h"
 #include "nsStreamUtils.h"
 #include "nsNetUtil.h"