PVS-Studio warning V560 for Miranda IM

#define GC_UNICODE 0x01000

DWORD dwFlags;

UINT CreateGCMenu(....)
{
  ...
  if (iIndex == 1 && si->iType != GCW_SERVER &&
      !(si->dwFlags && GC_UNICODE)) {
  ...
}

This is what should have been written here: (si->dwFlags & GC_UNICODE)

This suspicious code was found in Miranda IM project by PVS-Studio static code analyzer.
Warning message is:
V560 A part of conditional expression is always true: 0x01000. tabsrmm tools.cpp 1023

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/