diff --git a/atlas/models.py b/atlas/models.py
index 846d1bcc..987360fd 100644
--- a/atlas/models.py
+++ b/atlas/models.py
@@ -578,7 +578,7 @@ class Series(models.Model):
         anonymizer = dicognito.anonymizer.Anonymizer()
 
         for series_image in self.images.all():
-            file_path = pathlib.Path(settings.MEDIA_ROOT) / series_image.image.name
+            file_path = os.path.join(settings.MEDIA_ROOT, series_image.image.name)
 
             with pydicom.dcmread(file_path) as dataset:
                 anonymizer.anonymize(dataset)