diff --git a/core/modules/user/user.install b/core/modules/user/user.install
index 058ebbd..bb86002 100644
--- a/core/modules/user/user.install
+++ b/core/modules/user/user.install
@@ -273,7 +273,7 @@ function user_schema() {
       'module' => array(
         'description' => 'The name of the module declaring the variable.',
         'type' => 'varchar',
-        'length' => 255,
+        'length' => 204,
         'not null' => TRUE,
         'default' => '',
       ),