diff --git a/dom/quota/QuotaManagerService.cpp b/dom/quota/QuotaManagerService.cpp
index fb5f0f3a17..bd811dc9b3 100644
--- a/dom/quota/QuotaManagerService.cpp
+++ b/dom/quota/QuotaManagerService.cpp
@@ -16,6 +16,7 @@
 #include "mozilla/ipc/BackgroundParent.h"
 #include "mozilla/ipc/BackgroundUtils.h"
 #include "mozilla/ipc/PBackgroundChild.h"
+#include "nsContentUtils.h"
 #include "nsIIdleService.h"
 #include "nsIIPCBackgroundChildCreateCallback.h"
 #include "nsIObserverService.h"