diff --git a/eopayment/systempayv2.py b/eopayment/systempayv2.py
index def43eb..1c667cb 100644
--- a/eopayment/systempayv2.py
+++ b/eopayment/systempayv2.py
@@ -73,9 +73,6 @@ class Parameter:
             return value.replace('-','').isalnum()
         elif self.ptype == 'an;':
             return value.replace(';','').isalnum()
-        elif self.ptype == 'an@':
-            return value.replace('@','').isalnum()
-        # elif self.ptype == 'ans':
         return True