diff --git a/dnmetis/backend_C++/dnmetis_backend/README.md b/dnmetis/backend_C++/dnmetis_backend/README.md
index 5eee817..d929c6b 100644
--- a/dnmetis/backend_C++/dnmetis_backend/README.md
+++ b/dnmetis/backend_C++/dnmetis_backend/README.md
@@ -6,7 +6,7 @@
 
 1.install dnmetis_backend
 
-    ```python3.7.5 setup.py  install
+    `python3.7.5 setup.py  install`
 
 2.Install log: