diff --git a/src/Model/Table/UsersTable.php b/src/Model/Table/UsersTable.php
index bc346e92..8d32c388 100644
--- a/src/Model/Table/UsersTable.php
+++ b/src/Model/Table/UsersTable.php
@@ -84,7 +84,9 @@ public function initialize(array $config): void
     public function getSchema(): TableSchemaInterface
     {
         $schema = parent::getSchema();
-        $schema->setColumnType('additional_data', 'json');
+        if ($schema->hasColumn('additional_data')) {
+            $schema->setColumnType('additional_data', 'json');
+        }
 
         return $schema;
     }