diff --git a/src/plugins/export/ExportXml.py b/src/plugins/export/ExportXml.py
index c8be4e793..982b1ec5c 100644
--- a/src/plugins/export/ExportXml.py
+++ b/src/plugins/export/ExportXml.py
@@ -511,10 +511,10 @@ class GrampsXmlWriter(UpdateCallback):
         self.write_attribute_list(person.get_attribute_list())
         self.write_url_list(person.get_url_list(),index+1)
 
-        for family_handle in person.get_parent_family_handle_list():
+        for family_handle in sorted(person.get_parent_family_handle_list()):
             self.write_ref("childof",family_handle,index+1)
 
-        for family_handle in person.get_family_handle_list():
+        for family_handle in sorted(person.get_family_handle_list()):
             self.write_ref("parentin",family_handle,index+1)
 
         for person_ref in person.get_person_ref_list():