diff --git a/config b/config
index 4abe05ec..b45b6c96 100644
--- a/config
+++ b/config
@@ -7,6 +7,7 @@ CONFIG_BUSYBOX_CONFIG_ARP=y
 CONFIG_BUSYBOX_CONFIG_ARPING=y
 CONFIG_BUSYBOX_CONFIG_ASH_RANDOM_SUPPORT=y
 CONFIG_BUSYBOX_CONFIG_BASE64=y
+CONFIG_BUSYBOX_CONFIG_BC=y
 CONFIG_BUSYBOX_CONFIG_CHPASSWD=y
 CONFIG_BUSYBOX_CONFIG_DELUSER=y
 CONFIG_BUSYBOX_CONFIG_DIFF=y