diff --git a/Makefile b/Makefile
index cb8d4d7..112052a 100644
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,9 @@ all:
 
 clean:
 	set -e; for d in $(DIRS); do $(MAKE) -C $$d clean ; done
-
+	rm -f core core.* *.o .*.o *.s *.a .depend tmp_make *~ tags
+	for i in *_obj; do if [ -d $i ]; then rm -fr $i; fi; done
+	
 install:
 	set -e; for d in $(DIRS); do $(MAKE) -C $$d install ; done