diff --git a/widget/src/mac/nsDeviceContextSpecFactoryM.cpp b/widget/src/mac/nsDeviceContextSpecFactoryM.cpp
index ec01cdf2b23..b916ca1bc94 100644
--- a/widget/src/mac/nsDeviceContextSpecFactoryM.cpp
+++ b/widget/src/mac/nsDeviceContextSpecFactoryM.cpp
@@ -38,7 +38,7 @@
 #include "nsDeviceContextSpecFactoryM.h"
 #include "nsIDeviceContextSpec.h"
 #include "nsIPrintingContext.h"
-#include "nsGfxCIID.h"
+#include "nsWidgetsCID.h"
 #include "plstr.h"
 #include "nsDeviceContextSpecX.h"