diff --git a/README.md b/README.md
index 486d6e6..d1dc813 100644
--- a/README.md
+++ b/README.md
@@ -97,7 +97,7 @@ TurboPForDA,TurboForDA: Direct Access is normally used when accessing few indivi
 
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 ##### - Data files:
- - gov2.sorted from [DocId data set](#DocId data set) Block size=128 (lz4+blosc+VSimple w/ 64Ki)
+ - gov2.sorted from [DocId data set](#DocId data set) Block size=128/Delta coding
 
         ./icbench -fS -r gov2.sorted