diff --git a/modules/company/ir.py b/modules/company/ir.py
index 2807fe7dbd..2dd6e101b3 100644
--- a/modules/company/ir.py
+++ b/modules/company/ir.py
@@ -39,7 +39,7 @@ class Date(metaclass=PoolMeta):
         pool = Pool()
         Company = pool.get('company.company')
         company_id = Transaction().context.get('company')
-        if timezone is None and company_id:
+        if timezone is None and company_id is not None and company_id >= 0:
             company = Company(company_id)
             if company.timezone and pytz:
                 timezone = pytz.timezone(company.timezone)