diff --git a/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index ca88795..f67237e 100755
--- a/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -614,7 +614,7 @@
 	eth->mii_bus->priv = eth;
 	eth->mii_bus->parent = eth->dev;
 
-	if(snprintf(eth->mii_bus->id, MII_BUS_ID_SIZE, "%pOFn", mii_np)) {
+	if(snprintf(eth->mii_bus->id, MII_BUS_ID_SIZE, "%pOFn", mii_np) < 0) {
 		ret = -ENOMEM;
 		goto err_put_node;
 	}