diff --git a/src/ap/dfs.c b/src/ap/dfs.c
index 55b7188..6af0ef2 100644
--- a/src/ap/dfs.c
+++ b/src/ap/dfs.c
@@ -1048,7 +1048,7 @@ static int hostapd_dfs_request_channel_switch(struct hostapd_iface *iface,
 }
 
 
-static void hostpad_dfs_update_background_chain(struct hostapd_iface *iface)
+static int hostpad_dfs_update_background_chain(struct hostapd_iface *iface)
 {
 	int sec = 0;
 	enum dfs_channel_type channel_type = DFS_NO_CAC_YET;
@@ -1084,7 +1084,7 @@ static void hostpad_dfs_update_background_chain(struct hostapd_iface *iface)
 				  oper_centr_freq_seg1_idx, true)) {
 		wpa_printf(MSG_ERROR, "DFS failed to start CAC offchannel");
 		iface->radar_background.channel = -1;
-		return;
+		return -1;
 	}
 
 	iface->radar_background.channel = channel->chan;
@@ -1096,6 +1096,8 @@ static void hostpad_dfs_update_background_chain(struct hostapd_iface *iface)
 	wpa_printf(MSG_ERROR,
 		   "%s: setting background chain to chan %d (%d MHz)",
 		   __func__, channel->chan, channel->freq);
+
+	return 0;
 }
 
 
@@ -1320,8 +1322,7 @@ hostapd_dfs_background_start_channel_switch(struct hostapd_iface *iface,
 		 * Just select a new random channel according to the
 		 * regulations for monitoring.
 		 */
-		hostpad_dfs_update_background_chain(iface);
-		return 0;
+		return hostpad_dfs_update_background_chain(iface);
 	}
 
 	/*
-- 
2.29.2