diff --git a/test_conflict_set.py b/test_conflict_set.py
index 5d2b5b8..5a404ac 100644
--- a/test_conflict_set.py
+++ b/test_conflict_set.py
@@ -73,7 +73,7 @@ def test_internal_version_zero():
             cs.addWrites(0xFFFFFFF1, write(bytes([i])))
         for i in range(256 - 25, 256):
             cs.addWrites(0xFFFFFFF1, write(bytes([i])))
-        cs.addWrites(0, write(b"\xff"))
+        cs.addWrites(0x100000000, write(b"\xff"))
         cs.check(read(0xFFFFFFF1, b"\x00", b"\xff"))