1 files changed, 2 insertions, 6 deletions
diff --git a/os/kernel/src/chsys.c b/os/kernel/src/chsys.c
index 5bc86807b..9a7be60ee 100644
--- a/os/kernel/src/chsys.c
+++ b/os/kernel/src/chsys.c
@@ -42,11 +42,6 @@
 WORKING_AREA(_idle_thread_wa, PORT_IDLE_THREAD_STACK_SIZE);
 
 /**
- * @brief   Main thread structure.
- */
-Thread _mainthread;
-
-/**
  * @brief   This function implements the idle thread infinite loop.
  * @details The function puts the processor in the lowest power mode capable
  *          to serve interrupts.<br>
@@ -80,6 +75,7 @@ void _idle_thread(void *p) {
  * @special
  */
 void chSysInit(void) {
+  static Thread mainthread;
 #if CH_DBG_ENABLE_STACK_CHECK
   extern stkalign_t __main_thread_stack_base__;
 #endif
@@ -98,7 +94,7 @@ void chSysInit(void) {
 #endif
 
   /* Now this instructions flow becomes the main thread.*/
-  setcurrp(_thread_init(&_mainthread, NORMALPRIO));
+  setcurrp(_thread_init(&mainthread, NORMALPRIO));
   currp->p_state = THD_STATE_CURRENT;
 #if CH_DBG_ENABLE_STACK_CHECK
   /* This is a special case because the main thread Thread structure is not