diff --git a/src/ap/ap_drv_ops.c b/src/ap/ap_drv_ops.c
index dcc4fdc45..7e6bf4451 100644
--- a/src/ap/ap_drv_ops.c
+++ b/src/ap/ap_drv_ops.c
@@ -950,6 +950,7 @@ int hostapd_drv_do_acs(struct hostapd_data *hapd)
 	}
 
 	ret = hapd->driver->do_acs(hapd->drv_priv, &params);
+	os_free(freq_list);
 
 	return ret;
 }