diff --git a/configs/P1020RDB-PD_defconfig b/configs/P1020RDB-PD_defconfig
index 74f6c6d..89834fd 100644
--- a/configs/P1020RDB-PD_defconfig
+++ b/configs/P1020RDB-PD_defconfig
@@ -2,3 +2,4 @@
 CONFIG_MPC85xx=y
 CONFIG_TARGET_P1_P2_RDB_PC=y
 CONFIG_SYS_EXTRA_OPTIONS="P1020RDB_PD"
+CONFIG_CMD_SETEXPR=y