diff --git a/src/plugins/drawreport/AncestorTree.py b/src/plugins/drawreport/AncestorTree.py
index 9bba5e47a..d6c16c390 100644
--- a/src/plugins/drawreport/AncestorTree.py
+++ b/src/plugins/drawreport/AncestorTree.py
@@ -466,7 +466,7 @@ class AncestorTreeOptions(MenuReportOptions):
         pid.set_help(_("The center person for the tree"))
         menu.add_option(category_name, "pid", pid)
         
-        max_gen = NumberOption(_("Generations"), 10, 1, 15)
+        max_gen = NumberOption(_("Generations"), 10, 1, 50)
         max_gen.set_help(_("The number of generations to include in the tree"))
         menu.add_option(category_name, "maxgen", max_gen)