diff --git a/codex-rs/thread-manager-sample/src/main.rs b/codex-rs/thread-manager-sample/src/main.rs
index 7064d9e4ce..b2086047f6 100644
--- a/codex-rs/thread-manager-sample/src/main.rs
+++ b/codex-rs/thread-manager-sample/src/main.rs
@@ -200,7 +200,8 @@ fn new_config(model: Option<String>, arg0_paths: Arg0DispatchPaths) -> anyhow::R
         terminal_resize_reflow: TerminalResizeReflowConfig::default(),
         tui_keymap: TuiKeymap::default(),
         tui_vim_mode_default: false,
-        cwd,
+        cwd: cwd.clone(),
+        project_roots: vec![cwd],
         cli_auth_credentials_store_mode: AuthCredentialsStoreMode::File,
         mcp_servers: Constrained::allow_any(HashMap::new()),
         mcp_oauth_credentials_store_mode: OAuthCredentialsStoreMode::File,