diff --git a/README.md b/README.md
index 59e527d..3cb4197 100644
--- a/README.md
+++ b/README.md
@@ -12,8 +12,8 @@ Config read order:
 Usage:
 
 Help
-```
-oss-backupd -h
+```shell
+$ oss-backupd -h
 Usage:
   ./target/debug/oss-backupd [OPTIONS]
 
@@ -27,8 +27,8 @@ Optional arguments:
 ```
 
 Run with config file
-```
-oss-backupd -c sample-backupd-config.json
+```shell
+$ oss-backupd -c sample-backupd-config.json
 Compressing opt.rs, Finished: 1.16KB, Speed: -
 Compressing oss_util.rs, Finished: 5.28KB, Speed: -
 Compressing pgp_util.rs, Finished: 3.00KB, Speed: -