diff --git a/mt7615/mac.c b/mt7615/mac.c
index ad6c7d63..d6aae60c 100644
--- a/mt7615/mac.c
+++ b/mt7615/mac.c
@@ -1088,7 +1088,7 @@ u32 mt7615_mac_get_sta_tid_sn(struct mt7615_dev *dev, int wcid, u8 tid)
 	offset %= 32;
 
 	val = mt76_rr(dev, addr);
-	val >>= (tid % 32);
+	val >>= offset;
 
 	if (offset > 20) {
 		addr += 4;