diff --git a/arch/arm/configs/hammerhead_defconfig b/arch/arm/configs/hammerhead_defconfig
index f94bb7e..51e5323 100644
--- a/arch/arm/configs/hammerhead_defconfig
+++ b/arch/arm/configs/hammerhead_defconfig
@@ -1,4 +1,5 @@
 # CONFIG_ARM_PATCH_PHYS_VIRT is not set
+CONFIG_DEVTMPFS=y
 CONFIG_EXPERIMENTAL=y
 # CONFIG_SWAP is not set
 CONFIG_AUDIT=y