diff --git a/Common/make/ghdl.mk b/Common/make/ghdl.mk
index f2a8198..d0eee20 100644
--- a/Common/make/ghdl.mk
+++ b/Common/make/ghdl.mk
@@ -10,9 +10,11 @@ GHDL := ghdl
 GHDL_GCC := ghdl-gcc
 
 SIM_FILE-$(WITH_VCD) := $(BUILD_DIR)/$(NAME).vcd
+SIM_FILE-$(WITH_FST) := $(BUILD_DIR)/$(NAME).fst
 SIM_FILE-$(WITH_GHW) := $(BUILD_DIR)/$(NAME).ghw
 
 GTK_OPTS-$(WITH_VCD) := --vcd=$(SIM_FILE-y)
+GTK_OPTS-$(WITH_FST) := --fst=$(SIM_FILE-y)
 GTK_OPTS-$(WITH_GHW) := --wave=$(SIM_FILE-y)
 
 RUN_OPTS := --assert-level=error 
@@ -41,7 +43,12 @@ synth: analyze
 
 clean:
 	rm -f $(BUILD_DIR)/$(NAME)*.cf
-	
+	rm -f $(BUILD_DIR)/$(NAME)*.vcd
+	rm -f $(BUILD_DIR)/$(NAME)*.fst
+	rm -f $(BUILD_DIR)/$(NAME)*.ghw
+		rm -f $(BUILD_DIR)/$(NAME)*.log
+	rm -f $(BUILD_DIR)/$(NAME)*.o	
+				
 mrproper:
 	rm -rf $(BUILD_DIR)