diff --git a/configs/P2020RDB-PC_36BIT_SDCARD_defconfig b/configs/P2020RDB-PC_36BIT_SDCARD_defconfig
index fddd5da..3cc100a 100644
--- a/configs/P2020RDB-PC_36BIT_SDCARD_defconfig
+++ b/configs/P2020RDB-PC_36BIT_SDCARD_defconfig
@@ -13,6 +13,7 @@
 CONFIG_MPC85xx=y
 # CONFIG_CMD_ERRATA is not set
 CONFIG_TARGET_P2020RDB=y
+CONFIG_ENABLE_36BIT_PHYS=y
 CONFIG_SYS_MPC85XX_NO_RESETVEC=y
 CONFIG_SPL_SYS_MPC85XX_NO_RESETVEC=y
 CONFIG_PHYS_64BIT=y