diff --git a/cpukit/include/rtems/confdefs.h b/cpukit/include/rtems/confdefs.h
index 6a8f56f77d..b98dffb4c8 100644
--- a/cpukit/include/rtems/confdefs.h
+++ b/cpukit/include/rtems/confdefs.h
@@ -2420,7 +2420,7 @@ struct _reent *__getreent(void)
    _CONFIGURE_MEMORY_FOR_TASKS( \
      _CONFIGURE_TASKS, _CONFIGURE_TASKS) + \
    _CONFIGURE_MEMORY_FOR_TASKS( \
-     _CONFIGURE_POSIX_THREADS, _CONFIGURE_POSIX_THREADS) + \
+     CONFIGURE_MAXIMUM_POSIX_THREADS, CONFIGURE_MAXIMUM_POSIX_THREADS) + \
    _CONFIGURE_MEMORY_FOR_POSIX_MESSAGE_QUEUES( \
      CONFIGURE_MAXIMUM_POSIX_MESSAGE_QUEUES) + \
    _CONFIGURE_MEMORY_FOR_POSIX_SEMAPHORES( \