diff --git a/odoo/addons/base/i18n/base.pot b/odoo/addons/base/i18n/base.pot
index 616e3859b8a..083ef4a5adc 100644
--- a/odoo/addons/base/i18n/base.pot
+++ b/odoo/addons/base/i18n/base.pot
@@ -4821,6 +4821,12 @@ msgstr ""
 msgid "A9  13  37 x 52 mm"
 msgstr ""
 
+#. module: base
+#: code:addons/fields.py:1687
+#, python-format
+msgid "ASCII characters are required for %s in %s"
+msgstr ""
+
 #. module: base
 #: model:ir.model.fields,field_description:base.field_res_partner_title__shortcut
 msgid "Abbreviation"
diff --git a/odoo/fields.py b/odoo/fields.py
index 3f7b734796d..39fe7825e30 100644
--- a/odoo/fields.py
+++ b/odoo/fields.py
@@ -1681,7 +1681,10 @@ class Binary(Field):
             return None
         if isinstance(value, bytes):
             return psycopg2.Binary(value)
-        return psycopg2.Binary(pycompat.text_type(value).encode('ascii'))
+        try:
+            return psycopg2.Binary(pycompat.text_type(value).encode('ascii'))
+        except UnicodeEncodeError:
+            raise UserError(_("ASCII characters are required for %s in %s") % (value, self.name))
 
     def convert_to_cache(self, value, record, validate=True):
         if isinstance(value, _BINARY):