diff --git a/packages/spatie-laravel-tags-plugin/src/Forms/Components/SpatieTagsInput.php b/packages/spatie-laravel-tags-plugin/src/Forms/Components/SpatieTagsInput.php
index 3095328df9..ee7ce4cf73 100644
--- a/packages/spatie-laravel-tags-plugin/src/Forms/Components/SpatieTagsInput.php
+++ b/packages/spatie-laravel-tags-plugin/src/Forms/Components/SpatieTagsInput.php
@@ -100,7 +100,9 @@ class SpatieTagsInput extends TagsInput
         }
 
         $model = $this->getModel();
-        $tagClass = $model ? $model::getTagClassName() : config('tags.tag_model', Tag::class);
+        $tagClass = $model && method_exists($model, 'getTagClassName')
+            ? $model::getTagClassName()
+            : config('tags.tag_model', Tag::class);
         $type = $this->getType();
         $query = $tagClass::query();