diff --git a/tests/system_tests.rs b/tests/system_tests.rs
index 205eef7..8fd9818 100644
--- a/tests/system_tests.rs
+++ b/tests/system_tests.rs
@@ -113,4 +113,3 @@ fn forbid_backup_of_paths_within_repository() -> Result<(), BakareError> {
 // TODO: deduplicate data
 // TODO: test that index is stored separately from data
 // TODO: index corruption
-// TODO: newer version should be greater than older version