diff --git a/src/Makefile b/src/Makefile
index 918cd0107..4e5be8197 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -615,7 +615,7 @@ FOXLIB=-L/usr/local/lib \
        -lFOX-1.6 \
        -Wl,-rpath,$(FOXPATH)/src/.libs
 
-simu: $(BOARDSRC) $(CPPSRC) Makefile simu.cpp simpgmspace.cpp *.h *.lbm eeprom.bin
+simu: stamp_header $(BOARDSRC) $(CPPSRC) Makefile simu.cpp simpgmspace.cpp *.h *.lbm eeprom.bin
 	g++ simu.cpp $(CPPFLAGS) $(BOARDSRC) $(CPPSRC) simpgmspace.cpp $(ARCH) -MD -DSIMU -o simu $(FOXINC) $(FOXLIB) -pthread
 
 eeprom.bin:
@@ -702,6 +702,7 @@ clean_list :
 	$(REMOVE) *.d
 	$(REMOVE) *.lst
 	$(REMOVE) allsrc.cpp
+	$(REMOVE) stamp-open9x.h
 
 #### GOOGLE TESTS