diff --git a/lib/romlib/Makefile b/lib/romlib/Makefile
index 00dde31..0e5d447 100644
--- a/lib/romlib/Makefile
+++ b/lib/romlib/Makefile
@@ -60,11 +60,16 @@
 
 $(LIB_DIR)/libwrappers.a: jmptbl.i $(WRAPPER_DIR)/jmpvar.o
 	@echo "  AR      $@"
-	$(Q)./genwrappers.sh -b $(WRAPPER_DIR) -o $@ jmptbl.i
+	$(Q)./genwrappers.sh -b $(WRAPPER_DIR) -o $@ $(BUILD_DIR)/jmptbl.i
 
 $(BUILD_DIR)/jmptbl.s: jmptbl.i
 	@echo "  TBL     $@"
-	$(Q)./gentbl.sh -o $@ jmptbl.i
+	if [ -e "../../$(PLAT_DIR)/jmptbl.i" ] ; \
+	then \
+		$(Q)./gentbl.sh -o $@ -b $(BUILD_DIR) ../../$(PLAT_DIR)/jmptbl.i; \
+	else \
+		@echo "USE_ROMLIB=1 requires jump table list file: jmptbl.i in platform directory"; \
+	fi
 
 clean:
 	@rm -f $(BUILD_DIR)/*