diff --git a/xCAT-server/lib/xcat/plugins/mknb.pm b/xCAT-server/lib/xcat/plugins/mknb.pm
index 41a1f00c4..bdb2bcd17 100644
--- a/xCAT-server/lib/xcat/plugins/mknb.pm
+++ b/xCAT-server/lib/xcat/plugins/mknb.pm
@@ -171,9 +171,6 @@ sub process_request {
       }
    } elsif ($arch =~ /ppc/) {
       mkpath("$tftpdir/etc");
-      if (! -r "$tftpdir/yaboot") {
-          $callback->({error=>["Unable to locate yaboot to boot ppc clients, install yaboot-xcat"],errorcode=>[1]});
-      }
    }
    my $dopxe=0;
    foreach (keys %{$normnets}) {