diff --git a/xtask/src/opt.rs b/xtask/src/opt.rs
index 4567d42bd..faa4da2d9 100644
--- a/xtask/src/opt.rs
+++ b/xtask/src/opt.rs
@@ -126,7 +126,7 @@ pub struct QemuOpt {
     pub example: Option<String>,
 }
 
-/// Build uefi-test-runner and run it in QEMU.
+/// Run unit tests and doctests on the host.
 #[derive(Debug, Parser)]
 pub struct TestOpt;