diff --git a/c-user/message_manager.rst b/c-user/message_manager.rst
index 4ecabc6..c6b1343 100644
--- a/c-user/message_manager.rst
+++ b/c-user/message_manager.rst
@@ -434,7 +434,7 @@ CALLING SEQUENCE:
 
         rtems_status_code rtems_message_queue_send(
             rtems_id   id,
-            cons void *buffer,
+            const void *buffer,
             size_t     size
         );