diff --git a/board/bf533-stamp/Makefile b/board/bf533-stamp/Makefile
index 14bb7a2..1115df8 100644
--- a/board/bf533-stamp/Makefile
+++ b/board/bf533-stamp/Makefile
@@ -39,7 +39,7 @@
 	$(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
 
 u-boot.lds: u-boot.lds.S
-	$(CPP) $(CPPFLAGS) -P -Ubfin $^ > $@.tmp
+	$(CPP) $(CPPFLAGS) -D__ASSEMBLY__ -P -Ubfin $^ > $@.tmp
 	mv -f $@.tmp $@
 
 clean: