diff --git a/TESTS/mbedmicro-rtos-mbed/heap_and_stack/main.cpp b/TESTS/mbedmicro-rtos-mbed/heap_and_stack/main.cpp
index 54f26c0ae4..af6511c25a 100644
--- a/TESTS/mbedmicro-rtos-mbed/heap_and_stack/main.cpp
+++ b/TESTS/mbedmicro-rtos-mbed/heap_and_stack/main.cpp
@@ -182,7 +182,7 @@ void test_heap_in_range(void)
  */
 void test_main_stack_in_range(void)
 {
-    os_thread_t *thread = (os_thread_t*) osThreadGetId();
+    mbed_rtos_storage_thread_t *thread = (mbed_rtos_storage_thread_t *) osThreadGetId();
 
     uint32_t psp = __get_PSP();
     uint8_t *stack_mem = (uint8_t*) thread->stack_mem;