diff --git a/ui/main.slint b/ui/main.slint
index 027ccf9..b54bb6d 100644
--- a/ui/main.slint
+++ b/ui/main.slint
@@ -11,7 +11,7 @@ import { FilledIcons, OutlinedIcons } from "./icons.slint";
 
 component LightSwitch inherits Horizontal {
     in property <string> text: "";
-    in property <bool> checked: false;
+    in_out property <bool> checked: false;
     in property <bool> enabled: true;
 
     alignment: end;