diff --git a/xCAT-probe/subcmds/xcatmn b/xCAT-probe/subcmds/xcatmn
index e62ee0688..e439dfc7f 100755
--- a/xCAT-probe/subcmds/xcatmn
+++ b/xCAT-probe/subcmds/xcatmn
@@ -510,13 +510,13 @@ sub check_disk {
     foreach $mountpoint (keys %mountpointinfo) {
         if ($mountpointinfo{$mountpoint}{need} > $mountpointinfo{$mountpoint}{available}) {
             foreach (@{ $mountpointinfo{$mountpoint}{mount} }) {
-                $msg .= "'$_' needs $dir_expectedspace_list{$_} GiB disk space, ";
+                $msg .= "'$_' needs $dir_expectedspace_list{$_} GiB disk space. ";
             }
             my $mountmun = $#{$mountpointinfo{$mountpoint}{mount}} +1 ;
             if($mountmun >1){
-                $msg .= "these directories are parts of file system '$mountpoint'. The free space available in directory '$mountpoint' is $mountpointinfo{$mountpoint}{available} GiB, it is not enough.";
+                $msg .= "These directories are parts of file system '$mountpoint'. The free space available in directory '$mountpoint' is $mountpointinfo{$mountpoint}{available} GiB, it is not enough.";
             }else{
-                $msg .= "this directory is a part of file system '$mountpoint'. The free space available in directory '$mountpoint' is $mountpointinfo{$mountpoint}{available} GiB, it is not enough.";
+                $msg .= "This directory is a part of file system '$mountpoint'. The free space available in directory '$mountpoint' is $mountpointinfo{$mountpoint}{available} GiB, it is not enough.";
             }
             $rst = 1;
         }