diff --git a/xCAT-client/bin/psh b/xCAT-client/bin/psh
index 80e3d65fb..c4f8b8f5c 100755
--- a/xCAT-client/bin/psh
+++ b/xCAT-client/bin/psh
@@ -5,6 +5,7 @@ BEGIN
 {
    $::XCATROOT = $ENV{'XCATROOT'} ? $ENV{'XCATROOT'} : -d '/opt/xcat' ? '/opt/xcat' : '/usr';
 }
+close(STDIN);
 use lib "$::XCATROOT/lib/perl";
 use IO::Socket::SSL;
 use XML::Simple;