diff --git a/Svelto.ECS/Dispatcher/DispatchOnChange.cs b/Svelto.ECS/Dispatcher/DispatchOnChange.cs
index 3ab3199..b000675 100644
--- a/Svelto.ECS/Dispatcher/DispatchOnChange.cs
+++ b/Svelto.ECS/Dispatcher/DispatchOnChange.cs
@@ -7,6 +7,10 @@ namespace Svelto.ECS
         public DispatchOnChange(int senderID) : base(senderID)
         { }
 
+        public DispatchOnChange() 
+        {
+        }
+
         public new T value
         {
             set
diff --git a/Svelto.ECS/Dispatcher/DispatcherOnSet.cs b/Svelto.ECS/Dispatcher/DispatchOnSet.cs
similarity index 85%
rename from Svelto.ECS/Dispatcher/DispatcherOnSet.cs
rename to Svelto.ECS/Dispatcher/DispatchOnSet.cs
index 9d7de6e..76b7864 100644
--- a/Svelto.ECS/Dispatcher/DispatcherOnSet.cs
+++ b/Svelto.ECS/Dispatcher/DispatchOnSet.cs
@@ -9,6 +9,12 @@ namespace Svelto.ECS
             _senderID = senderID;
             _subscribers = new WeakEvent<int, T>();
         }
+        
+        public DispatchOnSet()
+        {
+            _senderID    = -1;
+            _subscribers = new WeakEvent<int, T>();
+        }
 
         public T value
         {