diff --git a/test/shared_ptr_alloc_test.cpp b/test/shared_ptr_alloc_test.cpp
index 9ae9628..08b9ec5 100644
--- a/test/shared_ptr_alloc_test.cpp
+++ b/test/shared_ptr_alloc_test.cpp
@@ -52,7 +52,7 @@ public:
 
     void * operator new(std::size_t)
     {
-        return std::allocator<X>().allocate(1, static_cast<X*>(0));
+        return std::allocator<X>().allocate(1);
     }
 
     void operator delete(void * p)