diff --git a/README.md b/README.md
index c999b92..4990028 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-This is a **SM2 sm2p256v1** implementation whose performance is similar like golang native P256 under **amd64** . 
+This is a **SM2 sm2p256v1** implementation whose performance is similar like golang native NIST P256 under **amd64** . 
 
 **SM2 encryption Benchmark**