diff --git a/librpc/rpc/dcesrv_core.c b/librpc/rpc/dcesrv_core.c
index a562adfd218..8029ed5e472 100644
--- a/librpc/rpc/dcesrv_core.c
+++ b/librpc/rpc/dcesrv_core.c
@@ -1362,7 +1362,7 @@ static void dcesrv_bind_done(struct tevent_req *subreq)
 
 	status = dcesrv_auth_complete(call, status);
 	if (!NT_STATUS_IS_OK(status)) {
-		status = dcesrv_bind_nak(call, 0);
+		status = dcesrv_bind_nak(call, DCERPC_BIND_NAK_REASON_INVALID_CHECKSUM);
 		dcesrv_conn_auth_wait_finished(conn, status);
 		return;
 	}
diff --git a/selftest/knownfail.d/dcerpc-auth-pad b/selftest/knownfail.d/dcerpc-auth-pad
index 29a7fcc48fd..b7c23427e22 100644
--- a/selftest/knownfail.d/dcerpc-auth-pad
+++ b/selftest/knownfail.d/dcerpc-auth-pad
@@ -11,5 +11,3 @@
 ^samba.tests.dcerpc.raw_protocol.samba.tests.dcerpc.raw_protocol.TestDCERPC_BIND.test_auth_tail_pad_spnego_auth3
 ^samba.tests.dcerpc.raw_protocol.samba.tests.dcerpc.raw_protocol.TestDCERPC_BIND.test_schannel_invalid_alter_no_padding.*chgdcpass
 ^samba.tests.dcerpc.raw_protocol.samba.tests.dcerpc.raw_protocol.TestDCERPC_BIND.test_schannel_invalid_alter_tail_padding.*chgdcpass
-^samba.tests.dcerpc.raw_protocol.samba.tests.dcerpc.raw_protocol.TestDCERPC_BIND.test_schannel_invalid_bind_no_padding.*chgdcpass
-^samba.tests.dcerpc.raw_protocol.samba.tests.dcerpc.raw_protocol.TestDCERPC_BIND.test_schannel_invalid_bind_tail_padding.*chgdcpass