diff --git a/target/linux/ramips/dts/WIZFI630S.dts b/target/linux/ramips/dts/WIZFI630S.dts
index 13c8f68f15..a03af8ae7e 100644
--- a/target/linux/ramips/dts/WIZFI630S.dts
+++ b/target/linux/ramips/dts/WIZFI630S.dts
@@ -181,6 +181,7 @@
 
 &esw {
 	mediatek,portmap = <0x3e>;
+	mediatek,portdisable = <0x26>;
 };
 
 &sdhci {