diff --git a/xCAT-server-2.0/usr/lib/xcat/plugins/dhcp.pm b/xCAT-server-2.0/usr/lib/xcat/plugins/dhcp.pm
index 258816115..0fc7e97f3 100644
--- a/xCAT-server-2.0/usr/lib/xcat/plugins/dhcp.pm
+++ b/xCAT-server-2.0/usr/lib/xcat/plugins/dhcp.pm
@@ -250,7 +250,7 @@ sub addnet {
     push @netent,"    } else if option client-architecture = 00:02 { #ia64\n ";
     push @netent,"      filename \"elilo.efi\";\n";
     push @netent,"    } else if substring(filename,0,1) = null { #otherwise, provide yaboot if the client isn't specific\n ";
-    push @netent,"      filename \"yaboot\";\n";
+    push @netent,"      filename \"/yaboot\";\n";
     push @netent,"    }\n";
     if ($range) { push @netent,"    range dynamic-bootp $range;\n" };
     push @netent,"  } # $net\/$mask subnet_end\n";