diff -r 23081860ea60 -r ad995a9905f9 cubicweb/test/unittest_rqlrewrite.py
--- a/cubicweb/test/unittest_rqlrewrite.py	Tue Mar 12 23:04:57 2019 +0100
+++ b/cubicweb/test/unittest_rqlrewrite.py	Tue Mar 12 23:45:15 2019 +0100
@@ -602,12 +602,11 @@
     def process(self, rql, args=None):
         if args is None:
             args = {}
-        querier = self.repo.querier
         union = parse(rql)  # self.vreg.parse(rql, annotate=True)
         with self.admin_access.repo_cnx() as cnx:
             self.vreg.solutions(cnx, union, args)
-            querier._annotate(union)
-            plan = querier.plan_factory(union, args, cnx)
+            self.vreg.rqlhelper.annotate(union)
+            plan = self.repo.querier.plan_factory(union, args, cnx)
             plan.preprocess(union)
             return union