diff --git a/xCAT-client/pods/man1/lstree.1.pod b/xCAT-client/pods/man1/lstree.1.pod
index 618151539..99ecb1907 100644
--- a/xCAT-client/pods/man1/lstree.1.pod
+++ b/xCAT-client/pods/man1/lstree.1.pod
@@ -65,7 +65,7 @@ Output is similar to:
  |__mycn12
  |__mycn13
  ......
-        
+
 =item 2.
 
 To display the tree of service node hierarchy for service node "mysn01".