diff --git a/layout/build/nsLayoutModule.cpp b/layout/build/nsLayoutModule.cpp
index a847608a82ed..5717a2db44fd 100644
--- a/layout/build/nsLayoutModule.cpp
+++ b/layout/build/nsLayoutModule.cpp
@@ -369,34 +369,34 @@ nsresult NS_NewFrameLoader(nsIFrameLoader** aResult);
 nsresult NS_NewSyncLoadDOMService(nsISyncLoadDOMService** aResult);
 nsresult NS_NewDOMEventGroup(nsIDOMEventGroup** aResult);
 
-extern nsresult NS_CreateFrameTraversal(nsIFrameTraversal** aResult);
-extern nsresult NS_CreateCSSFrameConstructor(nsICSSFrameConstructor** aResult);
-extern nsresult NS_NewLayoutHistoryState(nsILayoutHistoryState** aResult);
-extern nsresult NS_NewAutoCopyService(nsIAutoCopyService** aResult);
-extern nsresult NS_NewSelectionImageService(nsISelectionImageService** aResult);
+nsresult NS_CreateFrameTraversal(nsIFrameTraversal** aResult);
+nsresult NS_CreateCSSFrameConstructor(nsICSSFrameConstructor** aResult);
+nsresult NS_NewLayoutHistoryState(nsILayoutHistoryState** aResult);
+nsresult NS_NewAutoCopyService(nsIAutoCopyService** aResult);
+nsresult NS_NewSelectionImageService(nsISelectionImageService** aResult);
 
-extern nsresult NS_NewSelection(nsIFrameSelection** aResult);
-extern nsresult NS_NewDomSelection(nsISelection** aResult);
-extern nsresult NS_NewDocumentViewer(nsIDocumentViewer** aResult);
-extern nsresult NS_NewRange(nsIDOMRange** aResult);
-extern nsresult NS_NewRangeUtils(nsIRangeUtils** aResult);
-extern nsresult NS_NewContentIterator(nsIContentIterator** aResult);
-extern nsresult NS_NewPreContentIterator(nsIContentIterator** aResult);
-extern nsresult NS_NewGenRegularIterator(nsIContentIterator** aResult);
-extern nsresult NS_NewContentSubtreeIterator(nsIContentIterator** aResult);
-extern nsresult NS_NewGenSubtreeIterator(nsIContentIterator** aInstancePtrResult);
-extern nsresult NS_NewContentDocumentLoaderFactory(nsIDocumentLoaderFactory** aResult);
-extern nsresult NS_NewHTMLElementFactory(nsIElementFactory** aResult);
-extern nsresult NS_NewXMLElementFactory(nsIElementFactory** aResult);
-extern nsresult NS_NewHTMLCopyTextEncoder(nsIDocumentEncoder** aResult);
-extern nsresult NS_NewTextEncoder(nsIDocumentEncoder** aResult);
-extern nsresult NS_NewXBLService(nsIXBLService** aResult);
-extern nsresult NS_NewBindingManager(nsIBindingManager** aResult);
-extern nsresult NS_NewNodeInfoManager(nsINodeInfoManager** aResult);
-extern nsresult NS_NewContentPolicy(nsIContentPolicy** aResult);
-extern nsresult NS_NewFrameLoader(nsIFrameLoader** aResult);
-extern nsresult NS_NewSyncLoadDOMService(nsISyncLoadDOMService** aResult);
-extern nsresult NS_NewDOMEventGroup(nsIDOMEventGroup** aResult);
+nsresult NS_NewSelection(nsIFrameSelection** aResult);
+nsresult NS_NewDomSelection(nsISelection** aResult);
+nsresult NS_NewDocumentViewer(nsIDocumentViewer** aResult);
+nsresult NS_NewRange(nsIDOMRange** aResult);
+nsresult NS_NewRangeUtils(nsIRangeUtils** aResult);
+nsresult NS_NewContentIterator(nsIContentIterator** aResult);
+nsresult NS_NewPreContentIterator(nsIContentIterator** aResult);
+nsresult NS_NewGenRegularIterator(nsIContentIterator** aResult);
+nsresult NS_NewContentSubtreeIterator(nsIContentIterator** aResult);
+nsresult NS_NewGenSubtreeIterator(nsIContentIterator** aInstancePtrResult);
+nsresult NS_NewContentDocumentLoaderFactory(nsIDocumentLoaderFactory** aResult);
+nsresult NS_NewHTMLElementFactory(nsIElementFactory** aResult);
+nsresult NS_NewXMLElementFactory(nsIElementFactory** aResult);
+nsresult NS_NewHTMLCopyTextEncoder(nsIDocumentEncoder** aResult);
+nsresult NS_NewTextEncoder(nsIDocumentEncoder** aResult);
+nsresult NS_NewXBLService(nsIXBLService** aResult);
+nsresult NS_NewBindingManager(nsIBindingManager** aResult);
+nsresult NS_NewNodeInfoManager(nsINodeInfoManager** aResult);
+nsresult NS_NewContentPolicy(nsIContentPolicy** aResult);
+nsresult NS_NewFrameLoader(nsIFrameLoader** aResult);
+nsresult NS_NewSyncLoadDOMService(nsISyncLoadDOMService** aResult);
+nsresult NS_NewDOMEventGroup(nsIDOMEventGroup** aResult);
 
 #ifdef MOZ_XUL
 nsresult NS_NewXULElementFactory(nsIElementFactory** aResult);