diff --git a/export/fields.py b/export/fields.py
index 75f280e..23dabdf 100644
--- a/export/fields.py
+++ b/export/fields.py
@@ -258,6 +258,13 @@ def filter(self, name, value, queryset):
         return queryset.filter(**kwargs)
 
 
+class Field(forms.fields.Field):
+    def __init__(self, field, *args, **kwargs):
+        super(Field, self).__init__(
+            required=False,
+            *args, **kwargs)
+
+
 class FileField(BasicTextField):
     pass