diff --git a/docs/src/test-api/class-testconfig.md b/docs/src/test-api/class-testconfig.md
index 39830f6945..5785cf33ce 100644
--- a/docs/src/test-api/class-testconfig.md
+++ b/docs/src/test-api/class-testconfig.md
@@ -178,13 +178,19 @@ export default defineConfig({
 Or...
 ```js
 export default defineConfig({
-  filter: { filterTests: tests => tests.filter((test, index) => index % 2 === 0) },
+  filter: {
+    filterTests: tests => tests.filter((test, index) => index % 2 === 0)
+  },
 });
 ```
 Or...
 ```js
 export default defineConfig({
-  filter: { filterTestGroups: testgroups => testgroups.filter((testgroups, index) => index % 2 === 0) },
+  filter: {
+    filterTestGroups: testgroups => {
+      return testgroups.filter((testgroups, index) => index % 2 === 0)
+    },
+  },
 });
 ```
 
diff --git a/packages/playwright/types/test.d.ts b/packages/playwright/types/test.d.ts
index f53db33adc..fb267b148b 100644
--- a/packages/playwright/types/test.d.ts
+++ b/packages/playwright/types/test.d.ts
@@ -1055,7 +1055,9 @@ interface TestConfig<TestArgs = {}, WorkerArgs = {}> {
    *
    * ```js
    * export default defineConfig({
-   *   filter: { filterTests: tests => tests.filter((test, index) => index % 2 === 0) },
+   *   filter: {
+   *     filterTests: tests => tests.filter((test, index) => index % 2 === 0)
+   *   },
    * });
    * ```
    *
@@ -1063,7 +1065,11 @@ interface TestConfig<TestArgs = {}, WorkerArgs = {}> {
    *
    * ```js
    * export default defineConfig({
-   *   filter: { filterTestGroups: testgroups => testgroups.filter((testgroups, index) => index % 2 === 0) },
+   *   filter: {
+   *     filterTestGroups: testgroups => {
+   *       return testgroups.filter((testgroups, index) => index % 2 === 0)
+   *     },
+   *   },
    * });
    * ```
    *