diff --git a/configs/kilauea_defconfig b/configs/kilauea_defconfig
index 99c78a9..0f5bdf8 100644
--- a/configs/kilauea_defconfig
+++ b/configs/kilauea_defconfig
@@ -2,4 +2,5 @@
 CONFIG_4xx=y
 CONFIG_TARGET_KILAUEA=y
 CONFIG_SYS_EXTRA_OPTIONS="KILAUEA"
+CONFIG_CMD_SETEXPR=y
 CONFIG_REGEX=y