diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mac.c b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
index 1aadc47..81ccce1 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
@@ -415,36 +415,12 @@
 static void ar9003_hw_set11n_aggr_first(struct ath_hw *ah, void *ds,
 					u32 aggrLen)
 {
-#define FIRST_DESC_NDELIMS 60
 	struct ar9003_txc *ads = (struct ar9003_txc *) ds;
 
 	ads->ctl12 |= (AR_IsAggr | AR_MoreAggr);
 
-	if (ah->ent_mode & AR_ENT_OTP_MPSD) {
-		u32 ctl17, ndelim;
-		/*
-		 * Add delimiter when using RTS/CTS with aggregation
-		 * and non enterprise AR9003 card
-		 */
-		ctl17 = ads->ctl17;
-		ndelim = MS(ctl17, AR_PadDelim);
-
-		if (ndelim < FIRST_DESC_NDELIMS) {
-			aggrLen += (FIRST_DESC_NDELIMS - ndelim) * 4;
-			ndelim = FIRST_DESC_NDELIMS;
-		}
-
-		ctl17 &= ~AR_AggrLen;
-		ctl17 |= SM(aggrLen, AR_AggrLen);
-
-		ctl17 &= ~AR_PadDelim;
-		ctl17 |= SM(ndelim, AR_PadDelim);
-
-		ads->ctl17 = ctl17;
-	} else {
-		ads->ctl17 &= ~AR_AggrLen;
-		ads->ctl17 |= SM(aggrLen, AR_AggrLen);
-	}
+	ads->ctl17 &= ~AR_AggrLen;
+	ads->ctl17 |= SM(aggrLen, AR_AggrLen);
 }
 
 static void ar9003_hw_set11n_aggr_middle(struct ath_hw *ah, void *ds,
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index e1d1e90..feef013 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -644,8 +644,10 @@
  * meet the minimum required mpdudensity.
  */
 static int ath_compute_num_delims(struct ath_softc *sc, struct ath_atx_tid *tid,
-				  struct ath_buf *bf, u16 frmlen)
+				  struct ath_buf *bf, u16 frmlen,
+				  bool first_subfrm)
 {
+#define FIRST_DESC_NDELIMS 60
 	struct sk_buff *skb = bf->bf_mpdu;
 	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
 	u32 nsymbits, nsymbols;
@@ -668,6 +670,13 @@
 		ndelim += ATH_AGGR_ENCRYPTDELIM;
 
 	/*
+	 * Add delimiter when using RTS/CTS with aggregation
+	 * and non enterprise AR9003 card
+	 */
+	if (first_subfrm)
+		ndelim = max(ndelim, FIRST_DESC_NDELIMS);
+
+	/*
 	 * Convert desired mpdu density from microeconds to bytes based
 	 * on highest rate in rate series (i.e. first rate) to determine
 	 * required minimum length for subframe. Take into account
@@ -756,7 +765,6 @@
 			status = ATH_AGGR_LIMITED;
 			break;
 		}
-		nframes++;
 
 		/* add padding for previous frame to aggregation length */
 		al += bpad + al_delta;
@@ -765,9 +773,11 @@
 		 * Get the delimiters needed to meet the MPDU
 		 * density for this node.
 		 */
-		ndelim = ath_compute_num_delims(sc, tid, bf_first, fi->framelen);
+		ndelim = ath_compute_num_delims(sc, tid, bf_first, fi->framelen,
+						!nframes);
 		bpad = PADBYTES(al_delta) + (ndelim << 2);
 
+		nframes++;
 		bf->bf_next = NULL;
 		ath9k_hw_set_desc_link(sc->sc_ah, bf->bf_desc, 0);