diff --git a/app/models/notification.rb b/app/models/notification.rb
index 6072bf36b3..fe331a1164 100644
--- a/app/models/notification.rb
+++ b/app/models/notification.rb
@@ -159,7 +159,7 @@ class Notification < ApplicationRecord
     return if filtered? || Notification::GROUPABLE_NOTIFICATION_TYPES.exclude?(type)
 
     type_prefix = case type
-                  when :favourite, :reblog
+                  when :favourite, :reblog, :emoji_reaction
                     [type, target_status&.id].join('-')
                   when :follow
                     type