diff --git a/src/allmydata/test/test_windows.py b/src/allmydata/test/test_windows.py
index 1d8173de7..5aad36c0b 100644
--- a/src/allmydata/test/test_windows.py
+++ b/src/allmydata/test/test_windows.py
@@ -128,5 +128,5 @@ class GetArgvTests(SyncTestCase):
 
         self.assertThat(
             saved_argv,
-            Equals(argv),
+            Equals([u"expected"] + argv),
         )