diff --git a/src/ap/ieee802_11_ht.c b/src/ap/ieee802_11_ht.c
index 3dce5cbe4..6c3696f5e 100644
--- a/src/ap/ieee802_11_ht.c
+++ b/src/ap/ieee802_11_ht.c
@@ -250,8 +250,14 @@ void hostapd_get_ht_capab(struct hostapd_data *hapd,
 		return;
 	os_memcpy(neg_ht_cap, ht_cap, sizeof(*neg_ht_cap));
 	cap = le_to_host16(neg_ht_cap->ht_capabilities_info);
-	cap &= hapd->iconf->ht_capab;
-	cap |= (hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_DISABLED);
+
+	/*
+	 * Mask out HT features we don't support, but don't overwrite
+	 * non-symmetric features like STBC and SMPS. Just because
+	 * we're not in dynamic SMPS mode the STA might still be.
+	 */
+	cap &= (hapd->iconf->ht_capab | HT_CAP_INFO_RX_STBC_MASK |
+		HT_CAP_INFO_TX_STBC | HT_CAP_INFO_SMPS_MASK);
 
 	/*
 	 * STBC needs to be handled specially