diff --git a/README.md b/README.md
index aacb61725ed65ad568174932febb2bc8b6af56c8..0b0c964b24e105590bb637b612a5b2a295cf99fa 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ Please refer to https://github.com/HEP-FCC/FCCSW
 $ source /cvmfs/cepcsw.ihep.ac.cn/prototype/releases/externals/97.0.2/setup.sh
 $ git clone git@github.com:cepc/CEPCSW.git
 $ cd CEPCSW
-$ git checkout lcg97
+$ git checkout master # branch name
 $ mkdir build && cd build
 $ cmake .. -DHOST_BINARY_TAG=${BINARY_TAG}
 $ make