diff --git a/portal/base.py b/portal/base.py
index 96c9527..39241ab 100644
--- a/portal/base.py
+++ b/portal/base.py
@@ -76,7 +76,7 @@ class UploadHandler:
 
 
     def get_uploads_subdir(self, dir_name):
-        subdir = self.config['UPLOADS_DIR'] / dir_name
+        subdir = Path(self.config['UPLOADS_DIR']) / dir_name
         if not subdir.exists():
             subdir.mkdir(parents=True)
         return subdir