@ -66,7 +66,12 @@ namespace Squidex.Domain.Apps.Core.Schemas
if (Properties.AllowedValues != null)
{
jsonProperty.EnumerationNames = new Collection<string>(Properties.AllowedValues.ToList());
var names = jsonProperty.EnumerationNames = jsonProperty.EnumerationNames ?? new Collection<string>();
foreach (var value in Properties.AllowedValues)
names.Add(value);
}