diff --git a/sys/net80211/ieee80211_ht.c b/sys/net80211/ieee80211_ht.c
index 9bcd5730d153..0320c2dfde00 100644
--- a/sys/net80211/ieee80211_ht.c
+++ b/sys/net80211/ieee80211_ht.c
@@ -2742,6 +2742,14 @@ ieee80211_add_htcap_body(uint8_t *frm, struct ieee80211_node *ni)
 		rxmax = MS(ni->ni_htparam, IEEE80211_HTCAP_MAXRXAMPDU);
 		density = MS(ni->ni_htparam, IEEE80211_HTCAP_MPDUDENSITY);
 
+		IEEE80211_DPRINTF(vap, IEEE80211_MSG_11N,
+		    "%s: advertised rxmax=%d, density=%d, vap rxmax=%d, density=%d\n",
+		    __func__,
+		    rxmax,
+		    density,
+		    vap->iv_ampdu_rxmax,
+		    vap->iv_ampdu_density);
+
 		/* Cap at VAP rxmax */
 		if (rxmax > vap->iv_ampdu_rxmax)
 			rxmax = vap->iv_ampdu_rxmax;