diff --git a/pkgs/misc/vim-plugins/default.nix b/pkgs/misc/vim-plugins/default.nix
index 0ad4db97635..83dcab35e67 100644
--- a/pkgs/misc/vim-plugins/default.nix
+++ b/pkgs/misc/vim-plugins/default.nix
@@ -2,7 +2,7 @@
 { fetchurl, bash, stdenv, python, go, cmake, vim, vimUtils, perl, ruby, unzip
 , which, fetchgit, fetchFromGitHub, fetchhg, fetchzip, llvmPackages, zip
 , vim_configurable, vimPlugins, xkb_switch, git
-, Cocoa
+, Cocoa ? null
 }:
 
 let