diff --git a/operation/mkraid_wrapper.sh b/operation/mkraid_wrapper.sh
index dd034fa..78aa353 100755
--- a/operation/mkraid_wrapper.sh
+++ b/operation/mkraid_wrapper.sh
@@ -19,11 +19,11 @@
 # This file is a wrapper to mkraid.sh.
 while read line
 do
-  $(dirname $0)/mkraid.sh "$line" 
-  ret=$?
-  if [  $ret -ne 0 ];then
-    exit $ret
+	$(dirname $0)/mkraid.sh "$line" 
+	ret=$?
+	if [  $ret -ne 0 ];then
+		exit $ret
 	else
 		echo "@ make raid is success"
-  fi
+	fi
 done