diff --git a/docs/src/test-reporter-api/class-testcase.md b/docs/src/test-reporter-api/class-testcase.md
index 0a3a800268..a601b284cd 100644
--- a/docs/src/test-reporter-api/class-testcase.md
+++ b/docs/src/test-reporter-api/class-testcase.md
@@ -34,7 +34,7 @@ See also [`property: TestResult.status`] for the actual status.
 * since: v1.25
 - type: <[string]>
 
-Test ID that is computed based on the test file name, test title and project name. Test ID is unique within Playwright session.
+A test ID that is computed based on the test file name, test title and project name. The ID is unique within Playwright session.
 
 ## property: TestCase.location
 * since: v1.10
diff --git a/packages/playwright/types/testReporter.d.ts b/packages/playwright/types/testReporter.d.ts
index 584bd6a5fc..2b61ffaeea 100644
--- a/packages/playwright/types/testReporter.d.ts
+++ b/packages/playwright/types/testReporter.d.ts
@@ -710,7 +710,7 @@ export interface TestCase {
   expectedStatus: "passed"|"failed"|"timedOut"|"skipped"|"interrupted";
 
   /**
-   * Test ID that is computed based on the test file name, test title and project name. Test ID is unique within
+   * A test ID that is computed based on the test file name, test title and project name. The ID is unique within
    * Playwright session.
    */
   id: string;