diff --git a/Performance.md b/Performance.md
index da1e90a..e46c2bc 100644
--- a/Performance.md
+++ b/Performance.md
@@ -37,7 +37,7 @@
   - performance with 10K files is good enough today
   - SSD/NVMe are the future
 - use lazy/background/threaded load
-  - du, sort and _type-to-nav_ program options require a `stat()` on all entries
+  - du, sort and _type-to-nav_ program options require a `stat()` on all entries for correctness
 
 ## Comparison