diff --git a/trytond/ir/cron.py b/trytond/ir/cron.py
index a7f74ce1d4..931c5423cb 100644
--- a/trytond/ir/cron.py
+++ b/trytond/ir/cron.py
@@ -72,7 +72,8 @@ class Cron(OSV):
         return 5
 
     def default_user(self, cursor, user, context=None):
-        return user
+        user_obj = self.pool.get('res.user')
+        return user_obj.name_get(cursor, user, user, context=context)[0]
 
     def default_interval_number(self, cursor, user, context=None):
         return 1
diff --git a/trytond/res/request.py b/trytond/res/request.py
index a91704873c..7406fe0cba 100644
--- a/trytond/res/request.py
+++ b/trytond/res/request.py
@@ -59,7 +59,8 @@ class Request(OSV):
            'History', readonly=True)
 
     def default_act_from(self, cursor, user, context=None):
-        return user
+        user_obj = self.pool.get('res.user')
+        return user_obj.name_get(cursor, user, user, context=context)[0]
 
     def default_state(self, cursor, user, context=None):
         return 'draft'
@@ -206,10 +207,12 @@ class RequestHistory(OSV):
         return 'No Name'
 
     def default_act_from(self, cursor, user, context=None):
-        return user
+        user_obj = self.pool.get('res.user')
+        return user_obj.name_get(cursor, user, user, context=context)[0]
 
     def default_act_to(self, cursor, user, context=None):
-        return user
+        user_obj = self.pool.get('res.user')
+        return user_obj.name_get(cursor, user, user, context=context)[0]
 
     def default_date_sent(self, cursor, user, context=None):
         return datetime.datetime.now()