diff --git a/lib/pleroma/web/common_api/utils.ex b/lib/pleroma/web/common_api/utils.ex
index 22ce1ea90..6c9e117ae 100644
--- a/lib/pleroma/web/common_api/utils.ex
+++ b/lib/pleroma/web/common_api/utils.ex
@@ -98,6 +98,8 @@ def get_to_and_cc(_user, mentioned_users, inReplyTo, "direct") do
     end
   end
 
+  def get_to_and_cc(_user, _mentions, _inReplyTo, _), do: {[], []}
+
   def get_addressed_users(_, to) when is_list(to) do
     User.get_ap_ids_by_nicknames(to)
   end