diff --git a/trytond/trytond/pool.py b/trytond/trytond/pool.py
index 407ff358..0be2a41a 100644
--- a/trytond/trytond/pool.py
+++ b/trytond/trytond/pool.py
@@ -195,6 +195,16 @@ class Pool(object):
                 self.add(cls, type)
                 self.setup_mixin(self._modules, type='report', name=name)
                 return self.get(name, type=type)
+            elif name[:15] == 'babi_execution_':
+                import sys
+                # Do not reload if babi model is accessed during update.
+                if not sys.argv[0].endswith('trytond-admin'):
+                    with Transaction(new=True).start(self.database_name, 0,
+                            readonly=False):
+                        Execution = self.get('babi.report.execution')
+                        execution = Execution(int(name[15:]))
+                        execution.validate_model(avoid_registration=True)
+                    return self._pool[self.database_name][type][name]
             raise
 
     def add(self, cls, type='model'):