PVS-Studio warning V576 for CamStudio

// Produces a 100% Valid XHTML Strict document to display
// the flash file, which works in all browsers (even IE 4)
void produceFlashHTML(CString htmlfilename,
  CString flashfilename, CString flashfilepath,
  int onlyflashtag, int width, int height,int bk_red,
  int bk_green, int bk_blue)
{
  ....
  fprintf(htmlfile, "<title>%s</title>\n",
    LPCTSTR(flashfilename));
  fprintf(htmlfile, "<style type=\"text/css\">\n");
  fprintf(htmlfile, "#movie\n{\n",
    LPCTSTR(flashfilename)); //<<<
  fprintf(htmlfile, "\twidth: %dpx;\n", width);
  fprintf(htmlfile, "\theight: %dpx;\n", height);
  ...
}

I like the comment. How sure the author is! :)

This suspicious code was found in CamStudio project by PVS-Studio static code analyzer.
Warning message is:
V576 Incorrect format. A different number of actual arguments is expected while calling 'fprintf' function. Expected: 2. Present: 3. playplusview.cpp 7157

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/