diff --git a/tests/system_tests.rs b/tests/system_tests.rs
index c145eea..f4b0743 100644
--- a/tests/system_tests.rs
+++ b/tests/system_tests.rs
@@ -132,5 +132,5 @@ fn forbid_backup_of_paths_within_repository() -> Result<(), BakareError> {
 }
 
 // TODO: test concurrent writes
-// TODO: test that index is stored separately from data
 // TODO: index corruption
+// TODO: encryption