diff --git a/mozilla/modules/xml/Makefile b/mozilla/modules/xml/Makefile
index 38bdc7ebfdd..ad04d501cc0 100644
--- a/mozilla/modules/xml/Makefile
+++ b/mozilla/modules/xml/Makefile
@@ -35,7 +35,7 @@ LOCAL_INCLUDES	= -I./expat/xmltok -I./expat/xmlparse/ -I./glue
 
 include $(DEPTH)/config/rules.mk
 
-ifdef RHAPSODY
+ifeq ($(OS_ARCH),Rhapsody)
 CFLAGS += -traditional-cpp
 endif