diff --git a/lib/system_message.rb b/lib/system_message.rb
index c60461df3..d38b5113f 100644
--- a/lib/system_message.rb
+++ b/lib/system_message.rb
@@ -23,7 +23,7 @@ class SystemMessage
     title = I18n.t("system_messages.#{type}.subject_template", params)
     raw = I18n.t("system_messages.#{type}.text_body_template", params)
 
-    creator = PostCreator.create(Discourse.site_contact_user,
+    creator = PostCreator.new(Discourse.site_contact_user,
                        title: title,
                        raw: raw,
                        archetype: Archetype.private_message,