}
PollInfo->HandleCount = j;
- PollBufferSize = ((PCHAR)&PollInfo->Handles[j+1]) - ((PCHAR)PollInfo);
+ PollBufferSize = sizeof(AFD_POLL_INFO) + (PollInfo->HandleCount > 1 ? sizeof(HANDLE) * ( PollInfo->HandleCount - 1) : 0);
/* Send IOCTL */
Status = NtDeviceIoControlFile((HANDLE)PollInfo->Handles[0].Handle,