diff --git a/target/linux/ramips/dts/mt7628an_wiznet_wizfi630s.dts b/target/linux/ramips/dts/mt7628an_wiznet_wizfi630s.dts
index 0aeff750e9..97755c2da1 100644
--- a/target/linux/ramips/dts/mt7628an_wiznet_wizfi630s.dts
+++ b/target/linux/ramips/dts/mt7628an_wiznet_wizfi630s.dts
@@ -172,6 +172,7 @@
 
 &esw {
 	mediatek,portmap = <0x3e>;
+	mediatek,portdisable = <0x26>;
 };
 
 &sdhci {