diff --git a/layout/base/public/Makefile.in b/layout/base/public/Makefile.in
index 786d952c9c87..a6d3e1664330 100644
--- a/layout/base/public/Makefile.in
+++ b/layout/base/public/Makefile.in
@@ -47,6 +47,7 @@ EXPORTS =				\
 	nsIDOMSelection.h		\
 	nsIDOMSelectionListener.h		\
 	nsISpaceManager.h		\
+	nsIStyledContent.h      \
 	nsIStyleContext.h		\
 	nsIStyleFrameConstruction.h	\
 	nsIStyleRule.h			\
diff --git a/layout/base/public/makefile.win b/layout/base/public/makefile.win
index 018c010f5a1f..b6d6ce9c8265 100644
--- a/layout/base/public/makefile.win
+++ b/layout/base/public/makefile.win
@@ -46,6 +46,7 @@ EXPORTS =				\
 	nsIStyleSet.h			\
 	nsIStyleSheet.h			\
 	nsIStyleSheetLinkingElement.h	\
+	nsIStyledContent.h \
 	nsITextContent.h		\
 	nsFrameList.h                   \
 	nsFrameTraversal.h              \