diff --git a/src/agents/sandbox/browser.create.test.ts b/src/agents/sandbox/browser.create.test.ts
index 6dabb00e699..eabfaabbb5c 100644
--- a/src/agents/sandbox/browser.create.test.ts
+++ b/src/agents/sandbox/browser.create.test.ts
@@ -64,6 +64,7 @@ function buildConfig(enableNoVnc: boolean): SandboxConfig {
       enabled: true,
       image: "openclaw-sandbox-browser:bookworm-slim",
       containerPrefix: "openclaw-sbx-browser-",
+      network: "openclaw-sandbox-browser",
       cdpPort: 9222,
       vncPort: 5900,
       noVncPort: 6080,