diff --git a/Common/make/ghdl.mk b/Common/make/ghdl.mk
index d153f2b..ee7761f 100644
--- a/Common/make/ghdl.mk
+++ b/Common/make/ghdl.mk
@@ -13,7 +13,7 @@ analyze: $(BUILD_DIR) $(SRCS)
 	ghdl -a --work=$(NAME) --workdir=$(BUILD_DIR) $(SRCS)
 	
 run: analyze
-	-ghdl -r --work=$(NAME) --workdir=$(BUILD_DIR) $(ENTITY_RUN) --wave=$(BUILD_DIR)/$(NAME).ghw --assert-level=error >$(BUILD_DIR)/$(NAME).log
+	-ghdl -r --work=$(NAME) --workdir=$(BUILD_DIR) $(ENTITY_RUN) --vcd=$(BUILD_DIR)/$(NAME).vcd --wave=$(BUILD_DIR)/$(NAME).ghw --assert-level=error >$(BUILD_DIR)/$(NAME).log
 	
 sim: run
 	exec gtkwave -f $(BUILD_DIR)/$(NAME).ghw &