diff --git a/Plugin/Method/AdapterPlugin.php b/Plugin/Method/AdapterPlugin.php
index a8264b0..2e1d7ba 100644
--- a/Plugin/Method/AdapterPlugin.php
+++ b/Plugin/Method/AdapterPlugin.php
@@ -34,6 +34,6 @@ public function afterGetTitle(Adapter $subject, $result)
             $label = __('Wire transfer');
         }
 
-        return $label;
+        return (string)$label;
     }
 }