diff --git a/test/13_subdir_package/cibuildwheel_test.py b/test/13_subdir_package/cibuildwheel_test.py
index 27dc5842..0bfbe13b 100644
--- a/test/13_subdir_package/cibuildwheel_test.py
+++ b/test/13_subdir_package/cibuildwheel_test.py
@@ -1,6 +1,4 @@
 import os
-import platform
-
 import utils
 
 project_dir = os.path.dirname(__file__)