diff --git a/ribbon-core/src/main/java/com/netflix/serialization/Serializer.java b/ribbon-core/src/main/java/com/netflix/serialization/Serializer.java
index a874abd385d0535df977f632092ca1bc884bd453..d68eba2a030021c47fee5fd858b6530d7d5775eb 100644
--- a/ribbon-core/src/main/java/com/netflix/serialization/Serializer.java
+++ b/ribbon-core/src/main/java/com/netflix/serialization/Serializer.java
@@ -20,8 +20,6 @@ package com.netflix.serialization;
 import java.io.IOException;
 import java.io.OutputStream;
 
-import com.sun.istack.internal.Nullable;
-
 public interface Serializer<T> {
-    public void serialize(OutputStream out, T object, @Nullable TypeDef<?> type) throws IOException;    
+    public void serialize(OutputStream out, T object, TypeDef<?> type) throws IOException;    
 }