diff --git a/configs/turris_mox_defconfig b/configs/turris_mox_defconfig
index 4543acf073..68867161e5 100644
--- a/configs/turris_mox_defconfig
+++ b/configs/turris_mox_defconfig
@@ -32,7 +32,7 @@ CONFIG_CMD_PCI=y
 CONFIG_CMD_SPI=y
 CONFIG_CMD_USB=y
 CONFIG_CMD_WDT=y
-# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_SETEXPR=y
 CONFIG_CMD_TFTPPUT=y
 CONFIG_CMD_CACHE=y
 CONFIG_CMD_TIME=y