diff --git a/target/linux/ath79/dts/qca9557.dtsi b/target/linux/ath79/dts/qca9557.dtsi
index fefb91c39a..b726a382ee 100644
--- a/target/linux/ath79/dts/qca9557.dtsi
+++ b/target/linux/ath79/dts/qca9557.dtsi
@@ -223,7 +223,7 @@
 
 			gmac: gmac@18070000 {
 				compatible = "qca,qca9550-gmac";
-				reg = <0x18070000 0x14>;
+				reg = <0x18070000 0x58>;
 			};
 
 			wmac: wmac@18100000 {