diff --git a/components/cmdscheduler/cmd_scheduler.cpp b/components/cmdscheduler/cmd_scheduler.cpp
index 211f88f..b3807ac 100644
--- a/components/cmdscheduler/cmd_scheduler.cpp
+++ b/components/cmdscheduler/cmd_scheduler.cpp
@@ -25,7 +25,7 @@ void CmdScheduler::regbasiccmd() {
     }
     return (int32_t)0;
   });
-  this->registerCmd("sleep_ms", "", 1, [this](Context* context) {
+  this->registerCmd("sleep_ms", "(ms)", 1, [this](Context* context) {
     int ms = atoi(context->argv[1]);
     osDelay(ms);
     return 0;