diff --git a/rtos/TARGET_CORTEX/mbed_rtx_conf.h b/rtos/TARGET_CORTEX/mbed_rtx_conf.h
index c2acc50f38..b2be0743dc 100644
--- a/rtos/TARGET_CORTEX/mbed_rtx_conf.h
+++ b/rtos/TARGET_CORTEX/mbed_rtx_conf.h
@@ -70,8 +70,12 @@
 #define OS_IDLE_THREAD_TZ_MOD_ID     1
 #define OS_TIMER_THREAD_TZ_MOD_ID    1
 
+
 // Don't adopt default multi-thread support for ARM/ARMC6 toolchains from RTX code base.
 // Provide Mbed-specific instead.
 #define RTX_NO_MULTITHREAD_CLIB
 
+#define OS_IDLE_THREAD_NAME         "idle_thread"
+#define OS_TIMER_THREAD_NAME        "timer_thread"
+
 #endif /* MBED_RTX_CONF_H */