diff --git a/zthread.cpp b/zthread.cpp
index f83748e..d5b1d6e 100644
--- a/zthread.cpp
+++ b/zthread.cpp
@@ -49,8 +49,8 @@ void ZThread::init(const char *threadname, int stack_size, osPriority priority)
   m_zthreadstartworkevent = xEventGroupCreate();
   m_name                  = threadname;
 
-  osThreadDef(zosthread_default_task, zosthread_default_task, m_uxPriority, 0, m_stacksize);
-  m_defaultTaskHandle = osThreadCreate(osThread(zosthread_default_task), this);
+  osThreadDef_t threadhandl = {(char *)threadname, zosthread_default_task, m_uxPriority, 0, m_stacksize, NULL, NULL};
+  m_defaultTaskHandle       = osThreadCreate(&threadhandl, this);
   ZASSERT(m_defaultTaskHandle != NULL);
 }
 void ZThread::start(zosthread_cb_t cb) { start(cb, nullptr); }