diff --git a/src/cli/gateway-cli/register.option-collisions.test.ts b/src/cli/gateway-cli/register.option-collisions.test.ts
index d343002037d..1ef5ba2c238 100644
--- a/src/cli/gateway-cli/register.option-collisions.test.ts
+++ b/src/cli/gateway-cli/register.option-collisions.test.ts
@@ -61,6 +61,7 @@ vi.mock("../../commands/health.js", () => ({
 
 vi.mock("../../config/config.js", () => ({
   loadConfig: () => ({}),
+  readBestEffortConfig: async () => ({}),
 }));
 
 vi.mock("../../infra/bonjour-discovery.js", () => ({