diff --git a/target/linux/ath79/config-4.14 b/target/linux/ath79/config-4.14
index f64a02b9b2..0e24582cc7 100644
--- a/target/linux/ath79/config-4.14
+++ b/target/linux/ath79/config-4.14
@@ -202,6 +202,7 @@ CONFIG_REGMAP=y
 CONFIG_REGMAP_MMIO=y
 CONFIG_RESET_ATH79=y
 CONFIG_RESET_CONTROLLER=y
+CONFIG_RTL8366RB_PHY=y
 CONFIG_RTL8366S_PHY=y
 CONFIG_RTL8366_SMI=y
 # CONFIG_SCHED_INFO is not set