diff --git a/src/makefile b/src/makefile
index f04eff2..bb0aab3 100644
--- a/src/makefile
+++ b/src/makefile
@@ -14,7 +14,7 @@ $(EXECUTABLE): $(OBJECTS)
 	$(CC) $(CFLAGS) $< -o $@
 
 clean:
-	rm *.o
+	$(RM) *.o
 
 install:
 	mkdir -p /xlxd