diff --git a/src/radius/radius_server.c b/src/radius/radius_server.c
index b621ada55..d352f26ee 100644
--- a/src/radius/radius_server.c
+++ b/src/radius/radius_server.c
@@ -2348,6 +2348,8 @@ radius_server_init(struct radius_server_conf *conf)
 	if (data == NULL)
 		return NULL;
 
+	data->auth_sock = -1;
+	data->acct_sock = -1;
 	dl_list_init(&data->erp_keys);
 	os_get_reltime(&data->start_time);
 	data->conf_ctx = conf->conf_ctx;