diff --git a/app/models/card/activity_spike/detector.rb b/app/models/card/activity_spike/detector.rb
index b533318e3..1ba44f501 100644
--- a/app/models/card/activity_spike/detector.rb
+++ b/app/models/card/activity_spike/detector.rb
@@ -51,6 +51,6 @@ class Card::ActivitySpike::Detector
     end
 
     def last_event
-      card.events.order(created_at: :desc).first
+      card.events.order(:created_at).last
     end
 end