diff --git a/test/models/card/activity_spike/detector_test.rb b/test/models/card/activity_spike/detector_test.rb
index 8c1072e0c..6e0ce840e 100644
--- a/test/models/card/activity_spike/detector_test.rb
+++ b/test/models/card/activity_spike/detector_test.rb
@@ -1 +1,4 @@
-# See tests in +Card::StallableTest+
+require "test_helper"
+
+class Card::ActivitySpike::DetectorTest < ActiveSupport::TestCase
+end