diff --git a/pipenv/cli.py b/pipenv/cli.py
index 239cf972ad..408b716620 100644
--- a/pipenv/cli.py
+++ b/pipenv/cli.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 import contextlib
 import codecs
+import functools
 import os
 import sys
 import shutil
@@ -1051,7 +1052,7 @@ def do_lock(verbose=False, system=False, clear=False, pre=False):
         verbose=verbose,
         python=python_version(which('python', allow_global=system)),
         clear=clear,
-        which=which,
+        which=functools.partial(which, allow_global=system),
         which_pip=which_pip,
         project=project,
         pre=pre