diff --git a/architecture/powerpc/kernel26-disable.lst b/architecture/powerpc/kernel26-disable.lst
index 36ac0ba0e..126f82e08 100644
--- a/architecture/powerpc/kernel26-disable.lst
+++ b/architecture/powerpc/kernel26-disable.lst
@@ -6,5 +6,5 @@ CONFIG_3C515		2003-12-22	2.6.0
 CONFIG_EEXPRESS		2003-12-22	2.6.0
 CONFIG_VLSI_FIR		2003-12-22	2.6.0
 CONFIG_SCSI_AHA1542	2003-12-22	2.6.0
-CONFIG_MAC_SERIAL	2004-03-20	2.6.3
-
+CONFIG_MAC_SERIAL	2004-03-20	2.6.3	# suspend unfunctional
+CONFIG_SERIAL_PMACZILOG	2004-03-20	2.6.3	# suspend unfunctional