diff --git a/extensions/workspace-indicator/workspaceIndicator.js b/extensions/workspace-indicator/workspaceIndicator.js
index 9f54acbb..0e92fd74 100644
--- a/extensions/workspace-indicator/workspaceIndicator.js
+++ b/extensions/workspace-indicator/workspaceIndicator.js
@@ -132,7 +132,7 @@ class WorkspaceThumbnail extends St.Button {
         const box = new St.BoxLayout({
             style_class: 'workspace-box',
             y_expand: true,
-            vertical: true,
+            orientation: Clutter.Orientation.VERTICAL,
         });
         this.set_child(box);