diff --git a/itlwm/hal_iwn/ItlIwn.cpp b/itlwm/hal_iwn/ItlIwn.cpp
index 839bdc3a..8da07e73 100644
--- a/itlwm/hal_iwn/ItlIwn.cpp
+++ b/itlwm/hal_iwn/ItlIwn.cpp
@@ -4060,9 +4060,17 @@ iwn_set_link_quality(struct iwn_softc *sc, struct ieee80211_node *ni)
     linkq.ampdu_threshold = 3;
     linkq.ampdu_limit = htole16(4000);    /* 4ms */
 
-    if (ic->ic_flags & IEEE80211_F_USEPROT)
-        if (sc->hw_type != IWN_HW_REV_TYPE_4965)
+#if 0 // RTS/CTS protection not yet tested
+    if (ni->ni_flags & IEEE80211_NODE_HT &&
+        sc->agg_queue_mask > 0 &&
+        ic->ic_flags & IEEE80211_F_USEPROT)
+        if (sc->hw_type != IWN_HW_REV_TYPE_4965 &&
+            sc->hw_type != IWN_HW_REV_TYPE_5300 &&
+            sc->hw_type != IWN_HW_REV_TYPE_5150 &&
+            sc->hw_type != IWN_HW_REV_TYPE_5350 &&
+            sc->hw_type != IWN_HW_REV_TYPE_5100)
             linkq.flags |= IWN_LINK_QUAL_FLAGS_SET_STA_TLC_RTS;
+#endif
     
     /*
      * Fill the LQ rate selection table with legacy and/or HT rates