diff --git a/clearml/backend_interface/task/task.py b/clearml/backend_interface/task/task.py
index 65f9da9d..7942de7f 100644
--- a/clearml/backend_interface/task/task.py
+++ b/clearml/backend_interface/task/task.py
@@ -516,7 +516,7 @@ class Task(IdObjectBase, AccessMixin, SetupUploadMixin):
                 return a_name
             return '{}.{}'.format(a_name[:max(2, max_length-len(uuid)-1)], uuid)
 
-        return '/'.join(quote(x, safe="'[]{}()$^,.; -_+-=") for x in
+        return '/'.join(quote(x, safe="'[]{}()$^,.; -_+-=/") for x in
                         (limit_folder_name(self.get_project_name(), str(self.project), 256, False),
                          limit_folder_name(self.name, str(self.data.id), 128, True),
                          extra_path) if x)
diff --git a/clearml/storage/util.py b/clearml/storage/util.py
index 341b0404..b8300113 100644
--- a/clearml/storage/util.py
+++ b/clearml/storage/util.py
@@ -41,7 +41,7 @@ def get_config_object_matcher(**patterns):
 
 def quote_url(url):
     parsed = urlparse(url)
-    if parsed.scheme not in ('http', 'https'):
+    if parsed.scheme not in ("http", "https"):
         return url
     parsed = parsed._replace(path=quote(parsed.path))
     return urlunparse(parsed)