diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index d3558f0c7550..a1753335eb9d 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -115,6 +115,10 @@ static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata,
 			return -EBUSY;
 	}
 
+	/* TXQs are reserved in ieee80211_if_add() and cannot be added later */
+	if ((params->flags & MONITOR_FLAG_ACTIVE) && !sdata->vif.txq)
+		return -EOPNOTSUPP;
+
 	/* validate whether MU-MIMO can be configured */
 	if (!ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) &&
 	    !ieee80211_hw_check(&local->hw, NO_VIRTUAL_MONITOR) &&