diff --git a/dom/src/build/nsDOMFactory.cpp b/dom/src/build/nsDOMFactory.cpp
index 28d30686e3e..9d05bdf650c 100644
--- a/dom/src/build/nsDOMFactory.cpp
+++ b/dom/src/build/nsDOMFactory.cpp
@@ -128,6 +128,8 @@
 #include "nsIDOMCSS2Properties.h"
 #include "nsIDOMCSSStyleSheet.h"
 #include "nsIDOMCSSStyleRule.h"
+#include "nsIDOMCSSImportRule.h"
+#include "nsIDOMCSSMediaRule.h"
 #include "nsIDOMCSSRuleList.h"
 #include "nsIDOMRange.h"
 #include "nsIDOMSelection.h"
@@ -725,6 +727,8 @@ void XXXDomNeverCalled()
     NS_NewScriptCSSStyleSheet(0, 0, 0, 0);
     NS_NewScriptStyleSheetList(0, 0, 0, 0);
     NS_NewScriptCSSStyleRule(0, 0, 0, 0);
+    NS_NewScriptCSSImportRule(0, 0, 0, 0);
+    NS_NewScriptCSSMediaRule(0, 0, 0, 0);
     NS_NewScriptCSSRuleList(0, 0, 0, 0);
     NS_NewScriptRange(0, 0, 0, 0);
     NS_NewScriptSelection(0, 0, 0, 0);