diff --git a/book/src/impl-rs/usage.md b/book/src/impl-rs/usage.md
index 7a5ac5a..0120d1b 100644
--- a/book/src/impl-rs/usage.md
+++ b/book/src/impl-rs/usage.md
@@ -62,7 +62,7 @@ $ rustup target add wasm32-unknown-unknown
 
 Next, compile the example script:
 ```sh
-$ cargo build --release -p sao_ui_rs --target wasm32-unknown-unknown
+$ cargo build --release -p sao-ui-rs --target wasm32-unknown-unknown
 ```
 
 The path to the built example script is `target/wasm32-unknown-unknown/release/sao_ui_rs.wasm`.