diff --git a/content/core.page/test.yaml b/content/core.page/test.yaml
index 90260bb..c7952a9 100644
--- a/content/core.page/test.yaml
+++ b/content/core.page/test.yaml
@@ -1,2 +1,4 @@
 - title: Foo
   content: bar
+- title: Bar
+  content: foo
diff --git a/yamdl_playground/core/models.py b/yamdl_playground/core/models.py
index 80807c1..3d0314d 100644
--- a/yamdl_playground/core/models.py
+++ b/yamdl_playground/core/models.py
@@ -4,6 +4,6 @@ class Page(models.Model):
     __yamdl__ = True
 
     title = models.CharField(max_length=255)
-    slug = models.CharField(max_length=128, unique=True, db_index=True)
+    slug = models.CharField(max_length=128, unique=True, db_index=True, default=None, null=True)
 
     content = models.TextField()
diff --git a/yamdl_playground/core/utils.py b/yamdl_playground/core/utils.py
index 9c8399d..7395799 100644
--- a/yamdl_playground/core/utils.py
+++ b/yamdl_playground/core/utils.py
@@ -2,5 +2,7 @@ from yamdl.loader import ModelLoader
 
 class CustomYamdlLoader(ModelLoader):
     def load_fixture(self, model_class, data, file_path):
-        data["slug"] = file_path.stem
+        if file_path.suffix not in self.EXT_YAML:
+            data["slug"] = file_path.stem
+
         super().load_fixture(model_class, data, file_path)