diff --git a/odoo/fields.py b/odoo/fields.py
index 6c1e22ea77b..a1f434db849 100644
--- a/odoo/fields.py
+++ b/odoo/fields.py
@@ -1798,6 +1798,8 @@ class Selection(Field):
     def convert_to_cache(self, value, record, validate=True):
         if not validate:
             return value or False
+        if value and self.column_type[0] == 'int4':
+            value = int(value)
         if value in self.get_values(record.env):
             return value
         elif not value: