diff --git a/rtos/TARGET_CORTEX/mbed_rtx_handlers.c b/rtos/TARGET_CORTEX/mbed_rtx_handlers.c
index 223874e4e5..33204e6190 100644
--- a/rtos/TARGET_CORTEX/mbed_rtx_handlers.c
+++ b/rtos/TARGET_CORTEX/mbed_rtx_handlers.c
@@ -41,8 +41,6 @@ __NO_RETURN void osRtxIdleThread (void *argument)
 
 __NO_RETURN uint32_t osRtxErrorNotify (uint32_t code, void *object_id)
 {
-    osThreadId_t tid = osThreadGetId();
-
     switch (code) {
       case osRtxErrorStackUnderflow:
         // Stack underflow detected for thread (thread_id=object_id)