diff --git a/src/calibre/test_build.py b/src/calibre/test_build.py
index 0ba6e07b9a..e7d4950b32 100644
--- a/src/calibre/test_build.py
+++ b/src/calibre/test_build.py
@@ -74,8 +74,9 @@ class BuildTest(unittest.TestCase):
         parse('<p>xxx')
 
     def test_soupsieve(self):
+        import calibre.startup as s
         import soupsieve
-        del soupsieve
+        del soupsieve, s
 
     def test_plugins(self):
         exclusions = set()