diff --git a/tests/app/main/views/test_conversation.py b/tests/app/main/views/test_conversation.py
index 533adcec6..f4bc37d5c 100644
--- a/tests/app/main/views/test_conversation.py
+++ b/tests/app/main/views/test_conversation.py
@@ -278,6 +278,34 @@ def test_conversation_reply_shows_templates(
         )
 
 
+def test_conversation_reply_shows_live_search_if_list_of_templates_taller_than_screen(
+    client_request,
+    fake_uuid,
+    mock_get_more_service_templates_than_can_fit_onscreen,
+):
+    page = client_request.get(
+        'main.conversation_reply',
+        service_id=SERVICE_ONE_ID,
+        notification_id=fake_uuid,
+    )
+
+    assert page.select('.live-search')
+
+
+def test_conversation_reply_shows_live_search_if_list_of_templates_fits_onscreen(
+    client_request,
+    fake_uuid,
+    mock_get_service_templates,
+):
+    page = client_request.get(
+        'main.conversation_reply',
+        service_id=SERVICE_ONE_ID,
+        notification_id=fake_uuid,
+    )
+
+    assert not page.select('.live-search')
+
+
 def test_conversation_reply_redirects_with_phone_number_from_notification(
     client_request,
     fake_uuid,
diff --git a/tests/conftest.py b/tests/conftest.py
index 347ae250f..4a33813cb 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -990,7 +990,7 @@ def mock_get_service_templates(mocker):
 @pytest.fixture(scope='function')
 def mock_get_more_service_templates_than_can_fit_onscreen(mocker):
     def _create(service_id):
-        return create_service_templates(service_id, number_of_templates=10)
+        return create_service_templates(service_id, number_of_templates=20)
 
     return mocker.patch(
         'app.service_api_client.get_service_templates',