diff --git a/Makefile b/Makefile
index 0e64f12..d037f23 100644
--- a/Makefile
+++ b/Makefile
@@ -57,5 +57,6 @@ clobber: clean
 	rm -f *.o
 	rm -f *.obj
 	rm -f core
+	rm -f $(VALID_OBJ_FILES)
 
 .PHONY: all clean clobber
\ No newline at end of file