diff --git a/plugins/window-state/src/lib.rs b/plugins/window-state/src/lib.rs
index 810b526e..3a1f3fda 100644
--- a/plugins/window-state/src/lib.rs
+++ b/plugins/window-state/src/lib.rs
@@ -96,7 +96,7 @@ impl<R: Runtime> AppHandleExt for tauri::AppHandle<R> {
             let groups = binding.as_ref();
 
             for window in self.windows().values() {
-                window.update_state(state.get(group_name(groups, window.label().into())), flags)?;
+                window.update_state(state.get_mut(&group_name(groups, window.label().into())).unwrap(), flags)?;
             }
 
             create_dir_all(&app_dir)