diff --git a/src/ap/acs.c b/src/ap/acs.c
index c38d3632b..7e1b56700 100644
--- a/src/ap/acs.c
+++ b/src/ap/acs.c
@@ -511,7 +511,7 @@ static int acs_survey_list_is_sufficient(struct hostapd_channel_data *chan)
 	}
 
 	if (ret == -1)
-		ret = 1; /* no survey list entries */
+		ret = 0; /* no survey list entries */
 
 	if (!ret) {
 		wpa_printf(MSG_INFO,