diff --git a/src/Orleans.CodeGenerator/Model/SerializableTypeDescription.cs b/src/Orleans.CodeGenerator/Model/SerializableTypeDescription.cs
index d076d399b4..07b60bc5f7 100644
--- a/src/Orleans.CodeGenerator/Model/SerializableTypeDescription.cs
+++ b/src/Orleans.CodeGenerator/Model/SerializableTypeDescription.cs
@@ -173,7 +173,7 @@ public bool IsEmptyConstructable
                     t = t.BaseType;
                 }
 
-                foreach (var ctor in Type.Constructors.Where(x => x.IsImplicitlyDeclared))
+                foreach (var ctor in Type.Constructors)
                 {
                     if (ctor.Parameters.Length != 0)
                     {