diff --git a/src/ap/dfs.c b/src/ap/dfs.c
index 47e5002a1..6476b5335 100644
--- a/src/ap/dfs.c
+++ b/src/ap/dfs.c
@@ -296,6 +296,13 @@ static int dfs_check_chans_available(struct hostapd_iface *iface,
 
 	for(i = 0; i < n_chans; i++) {
 		channel = &mode->channels[start_chan_idx + i];
+
+		if (channel->flag & HOSTAPD_CHAN_DISABLED)
+			break;
+
+		if (!(channel->flag & HOSTAPD_CHAN_RADAR))
+			continue;
+
 		if ((channel->flag & HOSTAPD_CHAN_DFS_MASK) !=
 		    HOSTAPD_CHAN_DFS_AVAILABLE)
 			break;