diff --git a/targets/ARCH/rfsimulator/simulator.c b/targets/ARCH/rfsimulator/simulator.c
index e93c5eaa00..013e542689 100644
--- a/targets/ARCH/rfsimulator/simulator.c
+++ b/targets/ARCH/rfsimulator/simulator.c
@@ -820,6 +820,7 @@ int device_init(openair0_device *device, openair0_config_t *openair0_cfg) {
 
   AssertFatal((rfsimulator->epollfd = epoll_create1(0)) != -1,"");
 
+  // we need to call randominit() for telnet server (use gaussdouble=>uniformrand)
   randominit(0);
   set_taus_seed(0);
   /* look for telnet server, if it is loaded, add the channel modeling commands to it */