diff --git a/pipenv/__init__.py b/pipenv/__init__.py
index 897459b9..1506235e 100644
--- a/pipenv/__init__.py
+++ b/pipenv/__init__.py
@@ -7,11 +7,11 @@ import os
 import sys
 
 # Inject vendored directory into system path.
-v_path = os.path.sep.join([os.path.dirname(os.path.realpath(__file__)), 'vendor'])
+v_path = os.path.abspath(os.path.sep.join([os.path.dirname(os.path.realpath(__file__)), 'vendor']))
 sys.path.insert(0, v_path)
 
 # Inject patched directory into system path.
-v_path = os.path.sep.join([os.path.dirname(os.path.realpath(__file__)), 'patched'])
+v_path = os.path.abspath(os.path.sep.join([os.path.dirname(os.path.realpath(__file__)), 'patched']))
 sys.path.insert(0, v_path)
 
 from .cli import cli