diff --git a/tools/install_venv.py b/tools/install_venv.py
index f47477669..544abc6bb 100644
--- a/tools/install_venv.py
+++ b/tools/install_venv.py
@@ -70,4 +70,4 @@ def main(argv):
     print_help(venv, root)
 
 if __name__ == '__main__':
-    main(sys.argv)
+    sys.exit(main(sys.argv))