diff --git a/autoload/sy/repo.vim b/autoload/sy/repo.vim
index dfb2caf..7d9e940 100644
--- a/autoload/sy/repo.vim
+++ b/autoload/sy/repo.vim
@@ -443,7 +443,7 @@ endif
 
 let s:default_vcs_cmds = {
       \ 'git':      'git diff --no-color --no-ext-diff -U0 -- %f',
-      \ 'hg':       'hg diff --config extensions.color=! --config defaults.diff= --nodates -U0 -- %f',
+      \ 'hg':       'hg diff --color=never --config aliases.diff= --nodates -U0 -- %f',
       \ 'svn':      'svn diff --diff-cmd %d -x -U0 -- %f',
       \ 'bzr':      'bzr diff --using %d --diff-options=-U0 -- %f',
       \ 'darcs':    'darcs diff --no-pause-for-gui --no-unified --diff-opts=-U0 -- %f',