diff --git a/perl-xCAT/xCAT/PPCcfg.pm b/perl-xCAT/xCAT/PPCcfg.pm
index c33564a1a..45870141d 100644
--- a/perl-xCAT/xCAT/PPCcfg.pm
+++ b/perl-xCAT/xCAT/PPCcfg.pm
@@ -392,7 +392,7 @@ sub sshcfg {
         # Find logon in key file 
         #################################
         foreach ( @$result ) {
-            if ( /$logon$/ ) {
+            if ( /= $logon$/ ) {
                 return( [[$server,"enabled",SUCCESS]] );
             }
         }