diff --git a/crates/librqbit/src/upnp_server_adapter.rs b/crates/librqbit/src/upnp_server_adapter.rs
index 646a920..3128930 100644
--- a/crates/librqbit/src/upnp_server_adapter.rs
+++ b/crates/librqbit/src/upnp_server_adapter.rs
@@ -74,7 +74,7 @@ impl TorrentFileTreeNode {
                     .unwrap_or_else(|| self.title.clone());
                 ItemOrContainer::Item(Item {
                     id: encoded_id,
-                    parent_id: encoded_parent_id,
+                    parent_id: encoded_parent_id.map(|id| id as isize),
                     title: self.title.clone(),
                     mime_type: mime_guess::from_path(filename).first(),
                     url: format!(
@@ -600,7 +600,7 @@ mod tests {
             adapter.browse_direct_children(encode_id(1, 1), "127.0.0.1"),
             vec![ItemOrContainer::Item(Item {
                 id: encode_id(2, 1),
-                parent_id: Some(encode_id(1, 1)),
+                parent_id: Some(encode_id(1, 1) as isize),
                 title: "f2".into(),
                 mime_type: None,
                 url: "http://127.0.0.1:9005/torrents/1/stream/0/d1/f2".into()
diff --git a/crates/upnp-serve/src/services/content_directory.rs b/crates/upnp-serve/src/services/content_directory.rs
index 034e9a6..515a7ef 100644
--- a/crates/upnp-serve/src/services/content_directory.rs
+++ b/crates/upnp-serve/src/services/content_directory.rs
@@ -70,7 +70,7 @@ pub mod browse {
         #[derive(Debug, Clone, PartialEq, Eq)]
         pub struct Item {
             pub id: usize,
-            pub parent_id: Option<usize>,
+            pub parent_id: Option<isize>,
             pub title: String,
             pub mime_type: Option<mime_guess::Mime>,
             pub url: String,
@@ -97,7 +97,7 @@ pub mod browse {
                             "../resources/templates/content_directory/control/browse/item.tmpl.xml"
                         ),
                         id = item.id,
-                        parent_id = item.parent_id.unwrap_or(0),
+                        parent_id = item.parent_id.unwrap_or(-1),
                         mime_type = mime,
                         url = item.url,
                         upnp_class = upnp_class,