diff --git a/src/Venturecraft/Revisionable/Revision.php b/src/Venturecraft/Revisionable/Revision.php
index 2fdc838..9851be1 100644
--- a/src/Venturecraft/Revisionable/Revision.php
+++ b/src/Venturecraft/Revisionable/Revision.php
@@ -214,7 +214,7 @@ private function isRelated()
      *
      * @return string
      */
-    private function getRelatedModel()
+    protected function getRelatedModel()
     {
         $idSuffix = '_id';