1 changed files with 1 additions and 1 deletions
--- a/src/PersistentData/PersistentDataManager.php
+++ b/src/PersistentData/PersistentDataManager.php
@ -115,7 +115,7 @@ class PersistentDataManager implements IPersistentDataManager
            if (count($modified) > 0) {
                if ($model instanceof ModelWithSlug && isset($modified['slug'])) {
-                    $diff['slug']['new'] = $modified['slug'] = $this->generateUniqueSlug($model, $modified['slug']);
+                    $modified['slug'] = $this->generateUniqueSlug($model, $modified['slug']);
                }
                $modify->setId($id);