diff --git a/mt7996/mac.c b/mt7996/mac.c
index f7694faf2..31157112a 100644
--- a/mt7996/mac.c
+++ b/mt7996/mac.c
@@ -1360,13 +1360,14 @@ mt7996_mac_tx_free(struct mt7996_dev *dev, void *data, int len)
 				cur_info++;
 			continue;
 		} else if (info & MT_TXFREE_INFO_HEADER) {
-			u32 tx_retries = 0, tx_failed = 0;
+			u32 tx_retries = 0, tx_failed = 0, tx_count;
 
 			if (!wcid)
 				continue;
 
-			tx_retries =
-				FIELD_GET(MT_TXFREE_INFO_COUNT, info) - 1;
+			tx_count = FIELD_GET(MT_TXFREE_INFO_COUNT, info);
+			if (tx_count)
+				tx_retries = tx_count - 1;
 			tx_failed = tx_retries +
 				!!FIELD_GET(MT_TXFREE_INFO_STAT, info);