diff --git a/src/Exceptions/ModelNotSyncMasterException.php b/src/Exceptions/ModelNotSyncMasterException.php
index ee5feb9a..5ae35a68 100644
--- a/src/Exceptions/ModelNotSyncMasterException.php
+++ b/src/Exceptions/ModelNotSyncMasterException.php
@@ -6,10 +6,12 @@ namespace Stancl\Tenancy\Exceptions;
 
 use Exception;
 
+// todo@v4 improve all exception messages
+
 class ModelNotSyncMasterException extends Exception
 {
     public function __construct(string $class)
     {
-        parent::__construct("Model of $class class is not an SyncMaster model. Make sure you're using the central model to make changes to synced resources when you're in the central context");
+        parent::__construct("Model of $class class is not a SyncMaster model. Make sure you're using the central model to make changes to synced resources when you're in the central context");
     }
 }