diff --git a/application/migrations/154_create_dxpedition_table.php b/application/migrations/154_create_dxpedition_table.php
index a10562ea..b6578c5a 100644
--- a/application/migrations/154_create_dxpedition_table.php
+++ b/application/migrations/154_create_dxpedition_table.php
@@ -32,7 +32,7 @@ class Migration_create_dxpedition_table extends CI_Migration
                 ),
                 'callsign' => array(
                     'type' => 'VARCHAR',
-                    'constraint' => '255',
+                    'constraint' => '50',
                     'null' => FALSE,
                 ),
                 'country' => array(