diff --git a/configs/gdppc440etx_defconfig b/configs/gdppc440etx_defconfig
index 5aa579a..545df56 100644
--- a/configs/gdppc440etx_defconfig
+++ b/configs/gdppc440etx_defconfig
@@ -1,4 +1,5 @@
 CONFIG_PPC=y
 CONFIG_4xx=y
 CONFIG_TARGET_GDPPC440ETX=y
+CONFIG_CMD_SETEXPR=y
 CONFIG_REGEX=y