diff --git a/src/tools/xml_tools.py b/src/tools/xml_tools.py
index a77ce4f6..56bb007d 100644
--- a/src/tools/xml_tools.py
+++ b/src/tools/xml_tools.py
@@ -49,6 +49,10 @@ def dataForm2XMLUI(form, submit_id, session_id=None):
             __field_type = "string"
         elif field.fieldType == 'text-private':
             __field_type = "password"
+        elif field.fieldType == 'boolean':
+            __field_type = "bool"
+            if field.value is None:
+                field.value = "false"
         elif field.fieldType == 'list-single':
             __field_type = "list"
         else:
@@ -387,6 +391,10 @@ class XMLUI(object):
 
     def addBool(self, name=None, value="true"):
         """Add a string box"""
+        if value=="0":
+            value="false"
+        elif value=="1":
+            value="true"
         assert value in ["true", "false"]
         elem = self._createElem('bool', name, self.currentLayout)
         elem.setAttribute('value', value)