diff --git a/Makefile b/Makefile
index 4948c2f..0bd51cf 100644
--- a/Makefile
+++ b/Makefile
@@ -24,4 +24,4 @@ rb_tree_main.o:rb_tree_main.c
 	gcc -c -o $@ $<
 
 clean:
-	rm -rf ./*.o hash_main bubble_sort hash br_tree
+	rm -rf ./*.o hash_main bubble_sort hash rb_tree
diff --git a/hash.c b/hash.c
old mode 100755
new mode 100644
diff --git a/hash.h b/hash.h
old mode 100755
new mode 100644