diff --git a/dialog-gtk3/src/main.rs b/dialog-gtk3/src/main.rs
index a49f81e..47a8894 100644
--- a/dialog-gtk3/src/main.rs
+++ b/dialog-gtk3/src/main.rs
@@ -324,8 +324,7 @@ fn main() -> anyhow::Result<()> {
     dialog.show_all();
 
     gtk::main();
-
-    Ok(())
+    DialogExitStatus::OtherError.exit();  // We should never get here!
 }
 
 fn set_time_label(label: &gtk::Label) {