diff --git a/tests/test-encode b/tests/test-encode
--- a/tests/test-encode
+++ b/tests/test-encode
@@ -13,7 +13,7 @@ EOF
 
 echo "this is a test" | gzip > a.gz
 hg add a.gz
-hg ci -m "test" -d "0 0"
+hg ci -m "test" -d "1000000 0"
 echo %% no changes
 hg status
 touch a.gz