diff --git a/dom/fetch/Fetch.h b/dom/fetch/Fetch.h
index 0db4479feb..8508929e27 100644
--- a/dom/fetch/Fetch.h
+++ b/dom/fetch/Fetch.h
@@ -18,7 +18,9 @@
 #include "mozilla/ErrorResult.h"
 #include "mozilla/dom/Promise.h"
 #include "mozilla/dom/FetchStreamReader.h"
-#include "mozilla/dom/FetchIPCTypes.h"
+// Fix X11 header brain damage that conflicts with HeadersGuardEnum::None
+#undef None
+#include "mozilla/dom/RequestBinding.h"
 
 class nsIGlobalObject;
 class nsIEventTarget;