diff --git a/templates/repo/issue/view_content/sidebar/reference.tmpl b/templates/repo/issue/view_content/sidebar/reference.tmpl
index 5083b97fc2..1b02769ad1 100644
--- a/templates/repo/issue/view_content/sidebar/reference.tmpl
+++ b/templates/repo/issue/view_content/sidebar/reference.tmpl
@@ -13,7 +13,7 @@
 	<div class="ui equal width compact grid">
 		<div class="row tw-items-center" data-tooltip-content="{{$issueReferenceLink}}">
 			<span class="text column truncate">{{$issueReferenceLink}}</span>
-			<button class="ui two wide button column tw-p-2" data-clipboard-text="{{$issueReferenceLink}}">{{svg "octicon-copy" 14}}</button>
+			<button class="ui two wide button column tw-p-2" data-tooltip-content="{{ctx.Locale.Tr "copy"}}" data-clipboard-text="{{$issueReferenceLink}}">{{svg "octicon-copy" 14}}</button>
 		</div>
 	</div>
 </div>
diff --git a/tests/e2e/issue-sidebar.test.e2e.ts b/tests/e2e/issue-sidebar.test.e2e.ts
index 6eb44be856..cf3fe607d2 100644
--- a/tests/e2e/issue-sidebar.test.e2e.ts
+++ b/tests/e2e/issue-sidebar.test.e2e.ts
@@ -378,4 +378,8 @@ test('Issue: Reference', async ({page}) => {
   await expect(page.locator('.ui.reference .truncate')).toContainText(
     'user2/repo1#1',
   );
+
+  await page.getByRole('button', {name: 'Copy'}).click();
+  const reference = await page.evaluate(() => navigator.clipboard.readText());
+  expect(reference).toBe('user2/repo1#1');
 });