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app/views/moderation_mailer/update.text.haml

@@ -10,7 +10,7 @@
 - prev = render file: '/events/show'
 - @event = former
 
-= raw Diffy::Diff.new new, prev
+= raw Diffy::Diff.new prev, new
 \
 - if @current_user
   = edit_moderation_url @event