diff --git a/modules/party_relationship/party.py b/modules/party_relationship/party.py
index f02d159d40..3e7d67c76e 100644
--- a/modules/party_relationship/party.py
+++ b/modules/party_relationship/party.py
@@ -78,7 +78,7 @@ class Relation(ModelSQL):
         pool = Pool()
         Date = pool.get('ir.date')
         context = Transaction().context
-        date = context.get('date', Date.today())
+        date = context.get('date') or Date.today()
         start_date = self.start_date or dt.date.min
         end_date = self.end_date or dt.date.max
         return start_date <= date <= end_date
@@ -88,7 +88,7 @@ class Relation(ModelSQL):
         pool = Pool()
         Date = pool.get('ir.date')
         context = Transaction().context
-        date = context.get('date', Date.today())
+        date = context.get('date') or Date.today()
         table, _ = tables[None]
         _, operator, value = domain