diff --git a/plat/Makefile b/plat/Makefile
index 6868e8c..cc08482 100644
--- a/plat/Makefile
+++ b/plat/Makefile
@@ -14,7 +14,8 @@ $(PLATMODULELIST):
 	@echo "====================== make $@ ======================="
 	@cd $(PLATDIR)/$@ && $(MAKE)
 	@if [ $@ = "iptrans" ]; then \
-		./iptrans/mkiptrans.sh; \
+		cd $(PLATDIR)/$@
+		./mkiptrans.sh; \
 		cp -f ./iptrans $(BINDIR); \
 	fi
 	@cd -