diff --git a/extensions/native-window-placement/extension.js b/extensions/native-window-placement/extension.js
index aa2c0219..b4b81377 100644
--- a/extensions/native-window-placement/extension.js
+++ b/extensions/native-window-placement/extension.js
@@ -434,7 +434,7 @@ function enable() {
 
             let settings = new Gio.Settings({ schema: BUTTON_LAYOUT_SCHEMA });
             let layout = settings.get_string(BUTTON_LAYOUT_KEY);
-            let rtl = St.Widget.get_default_direction() == St.TextDirection.RTL;
+            let rtl = Clutter.get_default_text_direction() == Clutter.TextDirection.RTL;
 
             let split = layout.split(":");
             let side;