diff --git a/autoload/sy/repo.vim b/autoload/sy/repo.vim
index cc6e78f..72e0077 100644
--- a/autoload/sy/repo.vim
+++ b/autoload/sy/repo.vim
@@ -29,7 +29,7 @@ let s:vcs_dict = {
       \ 'perforce': 'p4'
       \ }
 
-let s:vcs_list    = get(g:, 'signify_vcs_list', values(filter(s:vcs_dict, 'executable(v:key)')))
+let s:vcs_list    = get(g:, 'signify_vcs_list', keys(filter(s:vcs_dict, 'executable(v:val)')))
 let s:diffoptions = get(g:, 'signify_diffoptions', {})
 
 " Function: #detect {{{1