diff --git a/target/linux/cns3xxx/config-4.9 b/target/linux/cns3xxx/config-4.9
index 8ae9714c340..2fec4f0f135 100644
--- a/target/linux/cns3xxx/config-4.9
+++ b/target/linux/cns3xxx/config-4.9
@@ -189,7 +189,7 @@ CONFIG_MMC_SDHCI_CNS3XXX=y
 CONFIG_MMC_SDHCI_PLTFM=y
 # CONFIG_MMC_TIFM_SD is not set
 CONFIG_MODULES_USE_ELF_REL=y
-# CONFIG_MPCORE_WATCHDOG is not set
+CONFIG_MPCORE_WATCHDOG=y
 CONFIG_MTD_M25P80=y
 # CONFIG_MTD_OF_PARTS is not set
 CONFIG_MTD_PHYSMAP=y