diff --git a/src/6.5-concurrency.md b/src/6.5-concurrency.md
index c36146f..6c7170d 100644
--- a/src/6.5-concurrency.md
+++ b/src/6.5-concurrency.md
@@ -3,7 +3,7 @@
 
 Rust claims it has the feature of "Fearless Concurrency". However, it is still hard to prevent concurrency bugs in practice. This module is designed to detect potential cocurrency bugs.
 
-Specifically, RAP now focus on these types of concurrency bugs:
+Specifically, RAPx now focus on these types of concurrency bugs:
 
 - Lifetime-related bug on locks, i.e. unexpected double-lock or unexpected unlock
 - (To be added)
@@ -17,6 +17,6 @@ Specifically, RAP now focus on these types of concurrency bugs:
 To detect concurrency bugs, use the command below in the same directory as cargo.toml
 
 ```
-cargo rap -conc
+cargo rapx -conc
 ```