diff --git a/c/src/ada-tests/tmtests/tm13/tmtest.adb b/c/src/ada-tests/tmtests/tm13/tmtest.adb
index c2e989d8b5..2a657d9515 100644
--- a/c/src/ada-tests/tmtests/tm13/tmtest.adb
+++ b/c/src/ada-tests/tmtests/tm13/tmtest.adb
@@ -100,7 +100,6 @@ package body TMTEST is
          16,
          RTEMS.DEFAULT_OPTIONS,
          TMTEST.QUEUE_ID,
-         MESSAGE_SIZE,
          STATUS
       );