diff --git a/config-arm-generic b/config-arm-generic
index ba22d23bc..8b7a567ac 100644
--- a/config-arm-generic
+++ b/config-arm-generic
@@ -54,7 +54,7 @@ CONFIG_OF_NET=y
 CONFIG_OF_PCI_IRQ=m
 CONFIG_OF_PCI=m
 # CONFIG_OF_SELFTEST is not set
-CONFIG_SERIAL_OF_PLATFORM=m
+CONFIG_SERIAL_OF_PLATFORM=y
 
 # MTD
 CONFIG_MTD_BLKDEVS=m