diff --git a/pip/req/req_set.py b/pip/req/req_set.py
index d601c17a661..5897476c7b2 100644
--- a/pip/req/req_set.py
+++ b/pip/req/req_set.py
@@ -671,6 +671,5 @@ def install(self, install_options, global_options=(), *args, **kwargs):
                     if (requirement.conflicts_with and
                             requirement.install_succeeded):
                         requirement.commit_uninstall()
-                requirement.remove_temporary_source()
 
         self.successfully_installed = to_install
diff --git a/tests/functional/test_install_cleanup.py b/tests/functional/test_install_cleanup.py
index 49fc5a0abe5..3de8a953268 100644
--- a/tests/functional/test_install_cleanup.py
+++ b/tests/functional/test_install_cleanup.py
@@ -32,7 +32,7 @@ def test_no_clean_option_blocks_cleaning_after_install(script, data):
         'install', '--no-clean', '--no-index', '--build', build,
         '--find-links=%s' % data.find_links, 'simple',
     )
-    assert exists(build)
+    assert exists(build / 'simple' / 'setup.py')
 
 
 @pytest.mark.network