From 924f741f596ed85ce73e5f90e71148a89fe1fc5a Mon Sep 17 00:00:00 2001
From: Kenneth Reitz <me@kennethreitz.org>
Date: Thu, 14 Sep 2017 13:08:40 -0400
Subject: [PATCH] maybe this is what's wrong with windows

Signed-off-by: Kenneth Reitz <me@kennethreitz.org>
---
 pipenv/cli.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pipenv/cli.py b/pipenv/cli.py
index 3d26f092..b1168bbe 100644
--- a/pipenv/cli.py
+++ b/pipenv/cli.py
@@ -1051,7 +1051,7 @@ def system_which(command):
         assert c.return_code == 0
     except AssertionError:
         return None
-    return c.out.strip()
+    return (c.out.strip() or c.err.strip())
 
 
 def format_help(help):