diff --git a/gramps/plugins/drawreport/ancestortree.py b/gramps/plugins/drawreport/ancestortree.py
index c3a33ab21..93dbecdc9 100644
--- a/gramps/plugins/drawreport/ancestortree.py
+++ b/gramps/plugins/drawreport/ancestortree.py
@@ -667,6 +667,7 @@ class AncestorTree(Report):
         self.database = database
         self._user = user
 
+    def begin_report(self):
         """
         This report needs the following parameters (class variables)
         that come in the options class.
diff --git a/gramps/plugins/drawreport/descendtree.py b/gramps/plugins/drawreport/descendtree.py
index f7d544924..d180ed480 100644
--- a/gramps/plugins/drawreport/descendtree.py
+++ b/gramps/plugins/drawreport/descendtree.py
@@ -1269,6 +1269,7 @@ class DescendTree(Report):
         self.options = options
         self.database = database
         
+    def begin_report(self):
         """ make the report in its full size and pages to print on
         scale one or both as needed/desired.
         """