diff --git a/src/agents/sandbox/fs-bridge.backend.e2e.test.ts b/src/agents/sandbox/fs-bridge.backend.e2e.test.ts
index f458223b176..8dde9c6356d 100644
--- a/src/agents/sandbox/fs-bridge.backend.e2e.test.ts
+++ b/src/agents/sandbox/fs-bridge.backend.e2e.test.ts
@@ -116,7 +116,9 @@ describe("sandbox fs bridge local backend e2e", () => {
         await expect(
           fs.readFile(path.join(workspaceDir, "nested", "hello.txt"), "utf8"),
         ).resolves.toBe("from-backend");
-        expect(scripts.some((script) => script.includes("operation = sys.argv[1]"))).toBe(true);
+        expect(scripts).toEqual(
+          expect.arrayContaining([expect.stringContaining("operation = sys.argv[1]")]),
+        );
       } finally {
         await fs.rm(stateDir, { recursive: true, force: true });
       }