diff --git a/pkg/webtests/task_by_index_test.go b/pkg/webtests/task_by_index_test.go
index 3921d6170..387c9c9d9 100644
--- a/pkg/webtests/task_by_index_test.go
+++ b/pkg/webtests/task_by_index_test.go
@@ -50,6 +50,19 @@ func TestTaskByProjectIndex(t *testing.T) {
 		assert.Contains(t, rec.Body.String(), `"id":1`)
 	})
 
+	t.Run("by project identifier", func(t *testing.T) {
+		// Project 1 has identifier "TEST1" in fixtures.
+		rec := do("/api/v1/projects/TEST1/tasks/by-index/1")
+		assert.Equal(t, http.StatusOK, rec.Code)
+		assert.Contains(t, rec.Body.String(), `"id":1`)
+	})
+
+	t.Run("identifier match is case-insensitive on the input", func(t *testing.T) {
+		rec := do("/api/v1/projects/test1/tasks/by-index/1")
+		assert.Equal(t, http.StatusOK, rec.Code)
+		assert.Contains(t, rec.Body.String(), `"id":1`)
+	})
+
 	t.Run("unknown project identifier returns 404", func(t *testing.T) {
 		rec := do("/api/v1/projects/does-not-exist/tasks/by-index/1")
 		assert.Equal(t, http.StatusNotFound, rec.Code)