diff --git a/extensions/openshell/src/backend.e2e.test.ts b/extensions/openshell/src/backend.e2e.test.ts
index 49351c04e70..4c29cd67d0a 100644
--- a/extensions/openshell/src/backend.e2e.test.ts
+++ b/extensions/openshell/src/backend.e2e.test.ts
@@ -495,7 +495,7 @@ describe("openshell sandbox backend e2e", () => {
         await bridge.writeFile({ filePath: "nested/remote-only.txt", data: "hello-remote\n" });
         await expect(
           fs.readFile(path.join(workspaceDir, "nested", "remote-only.txt"), "utf8"),
-        ).rejects.toThrow();
+        ).rejects.toMatchObject({ code: "ENOENT" });
         await expect(bridge.readFile({ filePath: "nested/remote-only.txt" })).resolves.toEqual(
           Buffer.from("hello-remote\n"),
         );
diff --git a/src/docker-setup.e2e.test.ts b/src/docker-setup.e2e.test.ts
index 7a0e75223b9..66f98b3c5f1 100644
--- a/src/docker-setup.e2e.test.ts
+++ b/src/docker-setup.e2e.test.ts
@@ -462,7 +462,9 @@ describe("scripts/docker/setup.sh", () => {
     expect(result.stderr).toContain("Sandbox requires Docker CLI");
     const log = await readDockerLog(activeSandbox);
     expect(log).toContain("config set agents.defaults.sandbox.mode off");
-    await expect(stat(join(activeSandbox.rootDir, "docker-compose.sandbox.yml"))).rejects.toThrow();
+    await expect(
+      stat(join(activeSandbox.rootDir, "docker-compose.sandbox.yml")),
+    ).rejects.toMatchObject({ code: "ENOENT" });
   });
 
   it("skips sandbox gateway restart when sandbox config writes fail", async () => {
@@ -499,7 +501,7 @@ describe("scripts/docker/setup.sh", () => {
       expect(forceRecreateLine).not.toContain("docker-compose.sandbox.yml");
       await expect(
         stat(join(activeSandbox.rootDir, "docker-compose.sandbox.yml")),
-      ).rejects.toThrow();
+      ).rejects.toMatchObject({ code: "ENOENT" });
     });
   });