diff --git a/tests/Makefile b/tests/Makefile
index e3824ba..9ace5b0 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -70,7 +70,7 @@ ifdef LIBTCC1
  LIBTCC1:=$(TOP)/$(LIBTCC1)
 endif
 
-all test : $(TESTS)
+all test : clean $(TESTS)
 
 hello-exe: ../examples/ex1.c
 	@echo ------------ $@ ------------