diff --git a/rtos/Thread.cpp b/rtos/Thread.cpp
index 20c1a083de..275b1b3c33 100644
--- a/rtos/Thread.cpp
+++ b/rtos/Thread.cpp
@@ -129,7 +129,11 @@ osStatus Thread::terminate() {
     _tid = (osThreadId_t)NULL;
     if (!_finished) {
         _finished = true;
-        ret = osThreadTerminate(local_id);
+        // if local_id == 0 Thread was not started in first place
+        // and does not have to be terminated
+        if(local_id != 0) {
+            ret = osThreadTerminate(local_id);
+        }
     }
     _mutex.unlock();
     return ret;