diff --git a/codex-rs/core/src/config/config_tests.rs b/codex-rs/core/src/config/config_tests.rs
index 0a6406fa60..3a32dc8d0d 100644
--- a/codex-rs/core/src/config/config_tests.rs
+++ b/codex-rs/core/src/config/config_tests.rs
@@ -827,13 +827,9 @@ async fn sandbox_workspace_write_allow_limited_git_writes_keeps_config_and_hooks
     .await?;
     let file_system = config.permissions.file_system_sandbox_policy();
     let cwd = config.cwd.as_path();
-    let git_dir = config.cwd.join(".git");
-    let git_config = git_dir.join("config");
-    let git_hooks = git_dir.join("hooks");
-
-    assert!(file_system.can_write_path_with_cwd(git_dir.join("index").as_path(), cwd));
-    assert!(!file_system.can_write_path_with_cwd(git_config.as_path(), cwd));
-    assert!(!file_system.can_write_path_with_cwd(git_hooks.join("pre-commit").as_path(), cwd));
+    assert!(file_system.can_write_path_with_cwd(Path::new(".git/index"), cwd));
+    assert!(!file_system.can_write_path_with_cwd(Path::new(".git/config"), cwd));
+    assert!(!file_system.can_write_path_with_cwd(Path::new(".git/hooks/pre-commit"), cwd));
     Ok(())
 }