diff --git a/iop/config b/iop/config
index fc0d293b8..afe139ef3 100644
--- a/iop/config
+++ b/iop/config
@@ -102,6 +102,7 @@ CONFIG_USE_STRIP=y
 CONFIG_BUILD_LOG=y
 CONFIG_BUSYBOX_CONFIG_ADDUSER=y
 CONFIG_BUSYBOX_CONFIG_ARPING=y
+CONFIG_BUSYBOX_CONFIG_ASH_IDLE_TIMEOUT=y
 CONFIG_BUSYBOX_CONFIG_ASH_RANDOM_SUPPORT=y
 CONFIG_BUSYBOX_CONFIG_CTTYHACK=y
 CONFIG_BUSYBOX_CONFIG_DELUSER=y