diff --git a/asset.py b/asset.py
index b1a80fc..329b19e 100644
--- a/asset.py
+++ b/asset.py
@@ -63,7 +63,7 @@ class Asset(SymbolMixin, ModelSQL, ModelView):
     currency_digits = fields.Integer(string='Digits', required=True,
         domain=[
             ('currency_digits', '>=', 0),
-            ('currency_digits', '<=', 8)])
+            ('currency_digits', '<=', 6)])
 
     wkn = fields.Function(fields.Char(string='NSIN', readonly=True,
         help='National Securities Identifying Number'),