diff --git a/cpukit/posix/src/pthreadexit.c b/cpukit/posix/src/pthreadexit.c
index 6b3a09af98..6f8a7a72d6 100644
--- a/cpukit/posix/src/pthreadexit.c
+++ b/cpukit/posix/src/pthreadexit.c
@@ -75,4 +75,5 @@ void pthread_exit(
 )
 {
   _POSIX_Thread_Exit( _Thread_Get_executing(), value_ptr );
+  RTEMS_UNREACHABLE();
 }