diff --git a/pipenv/cli.py b/pipenv/cli.py
index b4276f34..3e8348d8 100644
--- a/pipenv/cli.py
+++ b/pipenv/cli.py
@@ -1245,7 +1245,7 @@ def pip_install(
     # Install dependencies when a package is a VCS dependency.
     if [x for x in requirements.parse(package_name.split('--hash')[0])][0].vcs:
         no_deps = False
-        if allow_global is False:
+        if not allow_global:
             src = '--src {0}'.format(project.virtualenv_src_location)
         else:
             src = ''