diff --git a/Common/make/ghdl.mk b/Common/make/ghdl.mk
index c5e5f97..7e18c74 100644
--- a/Common/make/ghdl.mk
+++ b/Common/make/ghdl.mk
@@ -56,6 +56,7 @@ all:  analyze
 
 $(WORK_DIR):
 	mkdir -p $@
+	touch $(TARGET).gtkw
 	cp -u $(TARGET).gtkw $(BUILD_DIR)
 
 syntax: