diff --git a/mt7615/mac.c b/mt7615/mac.c
index d6aae60c..cbc6859e 100644
--- a/mt7615/mac.c
+++ b/mt7615/mac.c
@@ -610,14 +610,14 @@ static int mt7615_mac_fill_rx(struct mt7615_dev *dev, struct sk_buff *skb)
 			 * When header translation failure is indicated,
 			 * the hardware will insert an extra 2-byte field
 			 * containing the data length after the protocol
-			 * type field.
+			 * type field. This happens either when the LLC-SNAP
+			 * pattern did not match, or if a VLAN header was
+			 * detected.
 			 */
 			pad_start = 12;
 			if (get_unaligned_be16(skb->data + pad_start) == ETH_P_8021Q)
 				pad_start += 4;
-
-			if (get_unaligned_be16(skb->data + pad_start) !=
-			    skb->len - pad_start - 2)
+			else
 				pad_start = 0;
 		}
 
diff --git a/mt7915/mac.c b/mt7915/mac.c
index a76c82b0..e66951de 100644
--- a/mt7915/mac.c
+++ b/mt7915/mac.c
@@ -446,14 +446,14 @@ mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb)
 			 * When header translation failure is indicated,
 			 * the hardware will insert an extra 2-byte field
 			 * containing the data length after the protocol
-			 * type field.
+			 * type field. This happens either when the LLC-SNAP
+			 * pattern did not match, or if a VLAN header was
+			 * detected.
 			 */
 			pad_start = 12;
 			if (get_unaligned_be16(skb->data + pad_start) == ETH_P_8021Q)
 				pad_start += 4;
-
-			if (get_unaligned_be16(skb->data + pad_start) !=
-			    skb->len - pad_start - 2)
+			else
 				pad_start = 0;
 		}