diff --git a/src/Volo.Abp/Volo/Abp/Domain/Entities/EntityNotFoundException.cs b/src/Volo.Abp/Volo/Abp/Domain/Entities/EntityNotFoundException.cs
index 51ca026ff0..a33a9b8a41 100644
--- a/src/Volo.Abp/Volo/Abp/Domain/Entities/EntityNotFoundException.cs
+++ b/src/Volo.Abp/Volo/Abp/Domain/Entities/EntityNotFoundException.cs
@@ -5,7 +5,6 @@ namespace Volo.Abp.Domain.Entities
     /// <summary>
     /// This exception is thrown if an entity excepted to be found but not found.
     /// </summary>
-    //TODO: [Serializable]
     public class EntityNotFoundException : AbpException
     {
         /// <summary>
@@ -26,15 +25,6 @@ namespace Volo.Abp.Domain.Entities
 
         }
 
-        ///// <summary>
-        ///// Creates a new <see cref="EntityNotFoundException"/> object.
-        ///// </summary>
-        //public EntityNotFoundException(SerializationInfo serializationInfo, StreamingContext context)
-        //    : base(serializationInfo, context)
-        //{
-
-        //}
-        
         /// <summary>
         /// Creates a new <see cref="EntityNotFoundException"/> object.
         /// </summary>
diff --git a/src/Volo.Abp/Volo/Abp/Domain/Entities/IAggregateRoot.cs b/src/Volo.Abp/Volo/Abp/Domain/Entities/IAggregateRoot.cs
index c00f15de09..621004c93e 100644
--- a/src/Volo.Abp/Volo/Abp/Domain/Entities/IAggregateRoot.cs
+++ b/src/Volo.Abp/Volo/Abp/Domain/Entities/IAggregateRoot.cs
@@ -1,7 +1,5 @@
 namespace Volo.Abp.Domain.Entities
 {
-    //TODO: Domain events
-
     public interface IAggregateRoot : IAggregateRoot<string>, IEntity
     {
 
diff --git a/src/Volo.Abp/Volo/Abp/Domain/Entities/IHasConcurrencyStamp.cs b/src/Volo.Abp/Volo/Abp/Domain/Entities/IHasConcurrencyStamp.cs
index 94c41bc687..3e2386ba68 100644
--- a/src/Volo.Abp/Volo/Abp/Domain/Entities/IHasConcurrencyStamp.cs
+++ b/src/Volo.Abp/Volo/Abp/Domain/Entities/IHasConcurrencyStamp.cs
@@ -1,6 +1,5 @@
 namespace Volo.Abp.Domain.Entities
 {
-    //TODO: Think a better naming?
     public interface IHasConcurrencyStamp
     {
         string ConcurrencyStamp { get; set; }
diff --git a/src/Volo.Abp/Volo/Abp/Domain/Repositories/IQueryableRepository.cs b/src/Volo.Abp/Volo/Abp/Domain/Repositories/IQueryableRepository.cs
index 6f95b01d2b..ad0a56f8c6 100644
--- a/src/Volo.Abp/Volo/Abp/Domain/Repositories/IQueryableRepository.cs
+++ b/src/Volo.Abp/Volo/Abp/Domain/Repositories/IQueryableRepository.cs
@@ -17,8 +17,6 @@ namespace Volo.Abp.Domain.Repositories
     public interface IQueryableRepository<TEntity, TPrimaryKey> : IRepository<TEntity, TPrimaryKey>, IQueryable<TEntity>
         where TEntity : class, IEntity<TPrimaryKey>
     {
-        //TODO: Is Delete needed?
-
         /// <summary>
         /// Deletes many entities by function.
         /// Notice that: All entities fits to given predicate are retrieved and deleted.