diff --git a/portable/ThirdParty/GCC/Posix/port.c b/portable/ThirdParty/GCC/Posix/port.c
index 7d7b5d887..7107a56f8 100644
--- a/portable/ThirdParty/GCC/Posix/port.c
+++ b/portable/ThirdParty/GCC/Posix/port.c
@@ -430,6 +430,13 @@ Thread_t *pxThread = pvParams;
 	/* Call the task's entry point. */
 	pxThread->pxCode( pxThread->pvParams );
 
+	/* A function that implements a task must not exit or attempt to return to
+	* its caller as there is nothing to return to. If a task wants to exit it
+	* should instead call vTaskDelete( NULL ). Artificially force an assert()
+	* to be triggered if configASSERT() is defined, so application writers can
+        * catch the error. */
+	configASSERT( pdFALSE );
+
 	return NULL;
 }
 /*-----------------------------------------------------------*/