diff --git a/xCAT-server/lib/xcat/plugins/pxe.pm b/xCAT-server/lib/xcat/plugins/pxe.pm
index edf491639..2042514c7 100644
--- a/xCAT-server/lib/xcat/plugins/pxe.pm
+++ b/xCAT-server/lib/xcat/plugins/pxe.pm
@@ -42,7 +42,8 @@ sub check_dhcp {
 }
 
 sub _slow_get_tftpdir { #make up for paths where tftpdir is not passed in
-    my $nrtab = = xCAT::Table->new('noderes',-create=>0); #in order to detect per-node tftp directories
+    my $node = shift;
+    my $nrtab = xCAT::Table->new('noderes',-create=>0); #in order to detect per-node tftp directories
     unless ($nrtab) { return $globaltftpdir; }
     my $ent = $nrtab->getNodeAttribs($node,["tftpdir"]);
     if ($ent and $ent->{tftpdir}) {
diff --git a/xCAT-server/lib/xcat/plugins/xnba.pm b/xCAT-server/lib/xcat/plugins/xnba.pm
index 1fed7d27d..bc9f339ef 100644
--- a/xCAT-server/lib/xcat/plugins/xnba.pm
+++ b/xCAT-server/lib/xcat/plugins/xnba.pm
@@ -43,7 +43,8 @@ sub check_dhcp {
 }
 
 sub _slow_get_tftpdir { #make up for paths where tftpdir is not passed in
-    my $nrtab = = xCAT::Table->new('noderes',-create=>0); #in order to detect per-node tftp directories
+    my $node=shift;
+    my $nrtab = xCAT::Table->new('noderes',-create=>0); #in order to detect per-node tftp directories
     unless ($nrtab) { return $globaltftpdir; }
     my $ent = $nrtab->getNodeAttribs($node,["tftpdir"]);
     if ($ent and $ent->{tftpdir}) {
diff --git a/xCAT-server/lib/xcat/plugins/yaboot.pm b/xCAT-server/lib/xcat/plugins/yaboot.pm
index 986cf9c26..79b2f41c3 100644
--- a/xCAT-server/lib/xcat/plugins/yaboot.pm
+++ b/xCAT-server/lib/xcat/plugins/yaboot.pm
@@ -44,7 +44,8 @@ sub check_dhcp {
 }
 
 sub _slow_get_tftpdir { #make up for paths where tftpdir is not passed in
-    my $nrtab = = xCAT::Table->new('noderes',-create=>0); #in order to detect per-node tftp directories
+    my $node = shift;
+    my $nrtab = xCAT::Table->new('noderes',-create=>0); #in order to detect per-node tftp directories
     unless ($nrtab) { return $globaltftpdir; }
     my $ent = $nrtab->getNodeAttribs($node,["tftpdir"]);
     if ($ent and $ent->{tftpdir}) {