diff --git a/README.md b/README.md
index 084282b..3e28739 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 **SM2 encryption Benchmark**
 
-    P-256/SM2
+    P-256/SM2(No tuning)
     goos: windows
     goarch: amd64
     pkg: gmsm/sm2