diff --git a/rdf/content/src/Makefile.in b/rdf/content/src/Makefile.in
index b1250a9b2cff..cf5c43ccc3bc 100644
--- a/rdf/content/src/Makefile.in
+++ b/rdf/content/src/Makefile.in
@@ -27,6 +27,7 @@ include $(topsrcdir)/config/config.mk
 LIBRARY_NAME = rdfcontent_s
 
 CPPSRCS =				\
+	nsXULAttributes.cpp		\
 	nsJSElementObserver.cpp		\
 	nsJSNodeObserver.cpp		\
 	nsJSXULDocument.cpp		\
diff --git a/rdf/content/src/makefile.win b/rdf/content/src/makefile.win
index 1593ffc530f6..d8705427a6b5 100644
--- a/rdf/content/src/makefile.win
+++ b/rdf/content/src/makefile.win
@@ -27,6 +27,7 @@ LCFLAGS = \
         $(NULL)
 
 CPP_OBJS=\
+		.\$(OBJDIR)\nsXULAttributes.obj		  \
         .\$(OBJDIR)\nsJSElementObserver.obj       \
         .\$(OBJDIR)\nsJSNodeObserver.obj          \
         .\$(OBJDIR)\nsJSXULDocument.obj           \