diff --git a/integreat_cms/cms/utils/file_utils.py b/integreat_cms/cms/utils/file_utils.py
index 8faef8e657..e8fd6c9df0 100644
--- a/integreat_cms/cms/utils/file_utils.py
+++ b/integreat_cms/cms/utils/file_utils.py
@@ -66,7 +66,7 @@ def extract_zip_archive(
             invalid_files = [
                 file_path
                 for file_path in extracted_files
-                if not file_path.endswith(("/", *tuple(allowed_file_extensions)))
+                if not file_path.endswith(("/", *allowed_file_extensions))
             ]
             # Remove all invalid files from extracted files
             extracted_files = list(set(extracted_files) - set(invalid_files))