diff --git a/app/models/notifier.rb b/app/models/notifier.rb
index b856c4073..81e69ce07 100644
--- a/app/models/notifier.rb
+++ b/app/models/notifier.rb
@@ -4,10 +4,10 @@ class Notifier
   class << self
     def for(source)
       case source
-        when Event
-          "Notifier::#{source.eventable.class}EventNotifier".safe_constantize&.new(source)
-        when Mention
-          MentionNotifier.new(source)
+      when Event
+        "Notifier::#{source.eventable.class}EventNotifier".safe_constantize&.new(source)
+      when Mention
+        MentionNotifier.new(source)
       end
     end
   end