diff --git a/vim/vim.ml b/vim/vim.ml
index 60ad38d..d000ecb 100644
--- a/vim/vim.ml
+++ b/vim/vim.ml
@@ -140,7 +140,7 @@ let s:opam_configuration['merlin'] = function('OpamConfMerlin')
 
 let s:opam_packages = ["ocp-indent", "ocp-index", "merlin"]
 let s:opam_check_cmdline = ["opam list --installed --short --safe --color=never"] + s:opam_packages
-let s:opam_available_tools = systemlist(join(s:opam_check_cmdline, ' '))
+let s:opam_available_tools = split(system(join(s:opam_check_cmdline)))
 for tool in s:opam_packages
   " Respect package order (merlin should be after ocp-index)
   if count(s:opam_available_tools, tool) > 0