diff --git a/gfx/src/mac/Makefile.in b/gfx/src/mac/Makefile.in
index e81c3180399..19f806aa62e 100644
--- a/gfx/src/mac/Makefile.in
+++ b/gfx/src/mac/Makefile.in
@@ -86,6 +86,7 @@ CPPSRCS = \
 EXPORTS		= \
 		nsIImageMac.h \
 		nsIDrawingSurfaceMac.h \
+		nsGfxUtils.h \
 		$(NULL)
 
 ifeq (cocoa,$(MOZ_WIDGET_TOOLKIT))