diff --git a/Cloud-Tier.md b/Cloud-Tier.md
index 3176144..3af6c73 100644
--- a/Cloud-Tier.md
+++ b/Cloud-Tier.md
@@ -26,7 +26,7 @@ Compared to direct S3 storage, this is both faster and cheaper!
   * Compression
 * Faster!
   * Local access for recent data, skipping one internet trip.
-  * Only one internet http call to read old data.
+  * Access old data from S3 with O(1) http call.
 
 ## Usage
 1. Use `weed scaffold -conf=master` to generate `master.toml`, tweak it, and start master server with the `master.toml`.