diff --git a/configs/P1022DS_SDCARD_defconfig b/configs/P1022DS_SDCARD_defconfig
index 33b8121..1b31852 100644
--- a/configs/P1022DS_SDCARD_defconfig
+++ b/configs/P1022DS_SDCARD_defconfig
@@ -10,6 +10,7 @@
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
 CONFIG_SYS_EXTRA_OPTIONS="SDCARD"
+CONFIG_ENV_IS_IN_MMC=y
 CONFIG_BOOTDELAY=10
 CONFIG_BOARD_EARLY_INIT_F=y
 CONFIG_SPL=y