1 files changed, 3 insertions, 5 deletions
diff --git a/csharp/ProtocolBuffers/GeneratedSingleExtension.cs b/csharp/ProtocolBuffers/GeneratedSingleExtension.cs
index 0adcd7ef..d9a0adcf 100644
--- a/csharp/ProtocolBuffers/GeneratedSingleExtension.cs
+++ b/csharp/ProtocolBuffers/GeneratedSingleExtension.cs
@@ -6,17 +6,15 @@ namespace Google.ProtocolBuffers {
   /// <summary>
   /// Generated extension for a singular field.
   /// </remarks>
-  public class GeneratedSingleExtension<TContainer, TExtension> : GeneratedExtensionBase<TContainer, TExtension>    
-      where TContainer : IMessage<TContainer> {
-
+  public class GeneratedSingleExtension<TExtension> : GeneratedExtensionBase<TExtension>  {
     internal GeneratedSingleExtension(FieldDescriptor descriptor) : base(descriptor, typeof(TExtension)) {
     }
 
-    public static GeneratedSingleExtension<TContainer, TExtension> CreateInstance(FieldDescriptor descriptor) {
+    public static GeneratedSingleExtension<TExtension> CreateInstance(FieldDescriptor descriptor) {
       if (descriptor.IsRepeated) {
         throw new ArgumentException("Must call GeneratedRepeateExtension.CreateInstance() for repeated types.");
       }
-      return new GeneratedSingleExtension<TContainer, TExtension>(descriptor);
+      return new GeneratedSingleExtension<TExtension>(descriptor);
     }
 
     public override object FromReflectionType(object value) {