diff --git a/include/boost/detail/interlocked.hpp b/include/boost/detail/interlocked.hpp
index 4c87e6e..1802e34 100644
--- a/include/boost/detail/interlocked.hpp
+++ b/include/boost/detail/interlocked.hpp
@@ -35,11 +35,11 @@
 
 // under Windows CE we still have old-style Interlocked* functions
 
-extern "C" long __cdecl InterlockedIncrement( long volatile * );
-extern "C" long __cdecl InterlockedDecrement( long volatile * );
-extern "C" long __cdecl InterlockedCompareExchange( long volatile *, long, long );
-extern "C" long __cdecl InterlockedExchange( long volatile *, long );
-extern "C" long __cdecl InterlockedExchangeAdd( long volatile *, long );
+extern "C" long __cdecl InterlockedIncrement( long* );
+extern "C" long __cdecl InterlockedDecrement( long* );
+extern "C" long __cdecl InterlockedCompareExchange( long*, long, long );
+extern "C" long __cdecl InterlockedExchange( long*, long );
+extern "C" long __cdecl InterlockedExchangeAdd( long*, long );
 
 # define BOOST_INTERLOCKED_INCREMENT InterlockedIncrement
 # define BOOST_INTERLOCKED_DECREMENT InterlockedDecrement