diff --git a/drivers/mcb/Kconfig b/drivers/mcb/Kconfig
index fe8252831c1c..e9a6976e1010 100644
--- a/drivers/mcb/Kconfig
+++ b/drivers/mcb/Kconfig
@@ -4,6 +4,8 @@
 
 menuconfig MCB
 	   tristate "MCB support"
+	   default n
+	   depends on HAS_IOMEM
 	   help
 
 	   The MCB (MEN Chameleon Bus) is a Bus specific to MEN Mikroelektronik
@@ -16,7 +18,8 @@ menuconfig MCB
 if MCB
 config MCB_PCI
 	   tristate "PCI based MCB carrier"
-	   default m
+	   default n
+	   depends on PCI
 	   help
 
 	   This is a MCB carrier on a PCI device. Both PCI attached on-board