diff --git a/libs/hbb_common/src/platform/macos.rs b/libs/hbb_common/src/platform/macos.rs
index 0008c6266..dd83a8738 100644
--- a/libs/hbb_common/src/platform/macos.rs
+++ b/libs/hbb_common/src/platform/macos.rs
@@ -16,7 +16,7 @@ struct AlertResult {
     button: String,
 }
 
-/// Alert dialog, return the clicked button value.
+/// Firstly run the specified app, then alert a dialog. Return the clicked button value.
 ///
 /// # Arguments
 ///