diff --git a/configs/ci20_defconfig b/configs/ci20_defconfig
index 7f1bf878b6..a7b7622cd3 100644
--- a/configs/ci20_defconfig
+++ b/configs/ci20_defconfig
@@ -7,7 +7,6 @@ BR2_mips_32r2=y
 BR2_KERNEL_HEADERS_VERSION=y
 BR2_DEFAULT_KERNEL_VERSION="3.0.8"
 BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_3_0=y
-BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_MDEV=y
 BR2_TARGET_GENERIC_GETTY_PORT="ttyS4"
 
 # kernel