diff --git a/arch/arm/configs/rockchip_defconfig b/arch/arm/configs/rockchip_defconfig
index 8c89dc87ee8a..37673234f21c 100644
--- a/arch/arm/configs/rockchip_defconfig
+++ b/arch/arm/configs/rockchip_defconfig
@@ -90,7 +90,6 @@ CONFIG_MODVERSIONS=y
 CONFIG_PARTITION_ADVANCED=y
 CONFIG_CFQ_GROUP_IOSCHED=y
 # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
-CONFIG_KSM=y
 CONFIG_DEFAULT_MMAP_MIN_ADDR=32768
 CONFIG_CMA=y
 CONFIG_ZSMALLOC=y