diff --git a/Driver/SerializationTest.cpp b/Driver/SerializationTest.cpp
index d43b570..a668c74 100644
--- a/Driver/SerializationTest.cpp
+++ b/Driver/SerializationTest.cpp
@@ -42,7 +42,7 @@
   
   ~SerializationTest();
 
-  virtual void Initialize(ASTContext& context, unsigned) {
+  virtual void Initialize(ASTContext& context) {
     TU.setContext(&context);
   }