diff --git a/src/NHibernate/Mapping/ByCode/IClassMapper.cs b/src/NHibernate/Mapping/ByCode/IClassMapper.cs
index e16e41d2758..11334ae392a 100644
--- a/src/NHibernate/Mapping/ByCode/IClassMapper.cs
+++ b/src/NHibernate/Mapping/ByCode/IClassMapper.cs
@@ -58,6 +58,7 @@ public interface IClassAttributesMapper<TEntity> : IEntityAttributesMapper, IEnt
 		void Discriminator(Action<IDiscriminatorMapper> discriminatorMapping);
 		void DiscriminatorValue(object value);
 		void Table(string tableName);
+		void Check(string check);
 		void Catalog(string catalogName);
 		void Schema(string schemaName);
 		void Mutable(bool isMutable);