diff --git a/crates/lanspread-tauri-deno-ts/src-tauri/src/lib.rs b/crates/lanspread-tauri-deno-ts/src-tauri/src/lib.rs
index aa05182..43e336a 100644
--- a/crates/lanspread-tauri-deno-ts/src-tauri/src/lib.rs
+++ b/crates/lanspread-tauri-deno-ts/src-tauri/src/lib.rs
@@ -1539,13 +1539,17 @@ async fn get_game_thumbnail(
     use base64::Engine;
 
     let _app_invoke = enter_app_invoke(state.inner())?;
+    if !is_single_component_game_id(&game_id) {
+        log::warn!("Ignoring thumbnail request for invalid game id: {game_id}");
+        return Err(
+            std::io::Error::new(std::io::ErrorKind::InvalidInput, "invalid game id").into(),
+        );
+    }
     let resource_path = app_handle.path().resolve(
         format!("assets/{game_id}.jpg"),
         tauri::path::BaseDirectory::Resource,
     )?;
 
-    dbg!(&resource_path);
-
     let image_data = scoped_blocking(|| std::fs::read(&resource_path))?;
     let base64_data = base64::engine::general_purpose::STANDARD.encode(&image_data);
     Ok(format!("data:image/jpeg;base64,{base64_data}"))