--- a/libcrystalhd_int_if.cpp
+++ b/libcrystalhd_int_if.cpp
@@ -880,7 +880,7 @@
 					pIoctlData,
 					AllocSz,
 					(LPDWORD)&BytesReturned,
-					NULL))
+					false))
 	{
 		DebugLog_Trace(LDIL_DBG,"DtsDevMemWr: DeviceIoControl Failed\n");
 		return BC_STS_ERROR;