Why is the wrong font included?

Question

css

Hello.
Why is the wrong font included?

@font-face{
  font-family: HelveticaNeueCyrBold;
   src: url(../fonts/helveticaneuecyr-bold.eot);
   src: url(../fonts/helveticaneuecyr-bold.woff)format('woff'),
      url(../fonts/helveticaneuecyr-bold.woff2)format('woff2'),
      url(../fonts/helveticaneuecyr-bold.otf),
      url(../fonts/helveticaneuecyr-bold.ttf)format('truetype');
  }

the font is connected but not as it should be...
Is there an error in the code?