ERROR CON GIT PULL

Buenas, estoy intentando hacer el git pull para traer los datos de la rama master pero no me funciona, utilizo este comando

git pull servidorlocal master

pero me sale este error

$ git pull servidorlocal master remote: Enumerating objects: 5, done. remote: Counting objects: 100% (5/5), done. remote: Compressing objects: 100% (2/2), done. remote: Total 3 (delta 1), reused 0 (delta 0), pack-reused 0 Unpacking objects: 100% (3/3), 282 bytes | 1024 bytes/s, done. From C:/Users/LUFER/Documents/git-y-github/servidor

• branch master -> FETCH_HEAD 33948a4..8d389e8 master -> servidorlocal/master error: Your local changes to the following files would be overwritten by merge:

   index.html

  Please commit your changes or stash them before you merge. Aborting Updating 23405e8..8d389e8

alguna idea de que es ??