diff --git a/Makefile b/Makefile
index 3712437..b91de0b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,16 +1,17 @@
+.PHONY: all clean
+
 ifeq ($(OS),Windows_NT)     # Windows
-    CLEAN_SCRIPT := .\clean_win.bat
+    CLEAN_SCRIPT := @echo off && .\clean_win.bat
 else
     UNAME_S := $(shell uname -s)
     ifeq ($(UNAME_S),Linux) # Linux
-        CLEAN_SCRIPT := ./clean_lin.sh
+        CLEAN_SCRIPT := chmod +x clean_lin.sh && ./clean_lin.sh
     endif
 endif
 
-clean:
-	$(CLEAN_SCRIPT)
-
 all:
 	cmake .
 	ninja
 
+clean:
+	$(CLEAN_SCRIPT)