diff --git a/packages/playwright-ct-core/index.d.ts b/packages/playwright-ct-core/index.d.ts
index 9c323ef6df..f6710ee1f6 100644
--- a/packages/playwright-ct-core/index.d.ts
+++ b/packages/playwright-ct-core/index.d.ts
@@ -52,7 +52,7 @@ export function defineConfig(config: PlaywrightTestConfig): PlaywrightTestConfig
 export function defineConfig<T>(config: PlaywrightTestConfig<T>): PlaywrightTestConfig<T>;
 export function defineConfig<T, W>(config: PlaywrightTestConfig<T, W>): PlaywrightTestConfig<T, W>;
 export function defineConfig(config: PlaywrightTestConfig, ...configs: PlaywrightTestConfig[]): PlaywrightTestConfig;
-export function defineConfig<T>(config: PlaywrightTestConfig<T>, ...configs: PlaywrightTestConfig[]): PlaywrightTestConfig<T>;
-export function defineConfig<T, W>(config: PlaywrightTestConfig<T, W>, ...configs: PlaywrightTestConfig[]): PlaywrightTestConfig<T, W>;
+export function defineConfig<T>(config: PlaywrightTestConfig<T>, ...configs: PlaywrightTestConfig<T>[]): PlaywrightTestConfig<T>;
+export function defineConfig<T, W>(config: PlaywrightTestConfig<T, W>, ...configs: PlaywrightTestConfig<T, W>[]): PlaywrightTestConfig<T, W>;
 
 export { expect, devices, Locator } from 'playwright/test';
diff --git a/packages/playwright/types/test.d.ts b/packages/playwright/types/test.d.ts
index e9764b6ead..5a22800191 100644
--- a/packages/playwright/types/test.d.ts
+++ b/packages/playwright/types/test.d.ts
@@ -7486,8 +7486,8 @@ export function defineConfig(config: PlaywrightTestConfig): PlaywrightTestConfig
 export function defineConfig<T>(config: PlaywrightTestConfig<T>): PlaywrightTestConfig<T>;
 export function defineConfig<T, W>(config: PlaywrightTestConfig<T, W>): PlaywrightTestConfig<T, W>;
 export function defineConfig(config: PlaywrightTestConfig, ...configs: PlaywrightTestConfig[]): PlaywrightTestConfig;
-export function defineConfig<T>(config: PlaywrightTestConfig<T>, ...configs: PlaywrightTestConfig[]): PlaywrightTestConfig<T>;
-export function defineConfig<T, W>(config: PlaywrightTestConfig<T, W>, ...configs: PlaywrightTestConfig[]): PlaywrightTestConfig<T, W>;
+export function defineConfig<T>(config: PlaywrightTestConfig<T>, ...configs: PlaywrightTestConfig<T>[]): PlaywrightTestConfig<T>;
+export function defineConfig<T, W>(config: PlaywrightTestConfig<T, W>, ...configs: PlaywrightTestConfig<T, W>[]): PlaywrightTestConfig<T, W>;
 
 type MergedT<List> = List extends [TestType<infer T, any>, ...(infer Rest)] ? T & MergedT<Rest> : {};
 type MergedW<List> = List extends [TestType<any, infer W>, ...(infer Rest)] ? W & MergedW<Rest> : {};
diff --git a/utils/generate_types/overrides-test.d.ts b/utils/generate_types/overrides-test.d.ts
index 78df18f014..49c6988ea7 100644
--- a/utils/generate_types/overrides-test.d.ts
+++ b/utils/generate_types/overrides-test.d.ts
@@ -484,8 +484,8 @@ export function defineConfig(config: PlaywrightTestConfig): PlaywrightTestConfig
 export function defineConfig<T>(config: PlaywrightTestConfig<T>): PlaywrightTestConfig<T>;
 export function defineConfig<T, W>(config: PlaywrightTestConfig<T, W>): PlaywrightTestConfig<T, W>;
 export function defineConfig(config: PlaywrightTestConfig, ...configs: PlaywrightTestConfig[]): PlaywrightTestConfig;
-export function defineConfig<T>(config: PlaywrightTestConfig<T>, ...configs: PlaywrightTestConfig[]): PlaywrightTestConfig<T>;
-export function defineConfig<T, W>(config: PlaywrightTestConfig<T, W>, ...configs: PlaywrightTestConfig[]): PlaywrightTestConfig<T, W>;
+export function defineConfig<T>(config: PlaywrightTestConfig<T>, ...configs: PlaywrightTestConfig<T>[]): PlaywrightTestConfig<T>;
+export function defineConfig<T, W>(config: PlaywrightTestConfig<T, W>, ...configs: PlaywrightTestConfig<T, W>[]): PlaywrightTestConfig<T, W>;
 
 type MergedT<List> = List extends [TestType<infer T, any>, ...(infer Rest)] ? T & MergedT<Rest> : {};
 type MergedW<List> = List extends [TestType<any, infer W>, ...(infer Rest)] ? W & MergedW<Rest> : {};