diff --git a/openatlas/views/file.py b/openatlas/views/file.py
index 11b8352b3..a51605875 100644
--- a/openatlas/views/file.py
+++ b/openatlas/views/file.py
@@ -1,4 +1,5 @@
 import subprocess
+from pathlib import Path
 from subprocess import call, run
 from typing import Any, Union
 
@@ -73,7 +74,8 @@ def file_add(id_: int, view: str) -> Union[str, Response]:
 @app.route('/file/iiif/<int:id_>', methods=['GET', 'POST'])
 @required_group('contributor')
 def make_iiif_available(id_: int):
-    command =f"convert {get_file_path(id_)} -define tiff:tile-geometry=256x256 -compress jpeg 'ptif:{app.config['IIIF_DIR'] / str(id_)}'"
+
+    command =f"convert {get_file_path(id_)} -define tiff:tile-geometry=256x256 -compress jpeg 'ptif:{Path(app.config['IIIF_DIR']) / str(id_)}'"
     # call_ = call(f"convert {get_file_path(id_)} "
     #     f"-define tiff:tile-geometry=256x256 -compress jpeg "
     #     f"'ptif:{app.config['IIIF_DIR'] / str(id_)}'", shell=True)