diff --git a/build.rs b/build.rs
index 574e7a7..497f03c 100644
--- a/build.rs
+++ b/build.rs
@@ -19,7 +19,7 @@ fn main() -> Result<(), Error> {
     let mut cmd = Cli::command();
 
     for shell in Shell::value_variants() {
-        let path = generate_to(*shell, &mut cmd, "todo", &outdir)?;
+        let path = generate_to(*shell, &mut cmd, env!("CARGO_PKG_NAME"), &outdir)?;
 
         println!("cargo:warning=completion file is generated: {path:?}");
     }