diff --git a/src/ZGoBackend.hs b/src/ZGoBackend.hs
index 9604fe4..1029aea 100644
--- a/src/ZGoBackend.hs
+++ b/src/ZGoBackend.hs
@@ -1018,6 +1018,7 @@ payOwner p d x =
                          (select ["_id" =: ownerId] "owners")
                          [ "$set" =:
                            [ "paid" =: True
+                           , "invoices" =: True
                            , "expiration" =:
                              posixSecondsToUTCTime
                                (fromInteger