diff --git a/js/ui/altTab.js b/js/ui/altTab.js
index fb31b9a2c..fefa3b410 100644
--- a/js/ui/altTab.js
+++ b/js/ui/altTab.js
@@ -100,6 +100,8 @@ AltTabPopup.prototype = {
         // those calculations
         if (this._thumbnails) {
             let icon = this._appIcons[this._currentApp].actor;
+            // Force a stage relayout to make sure we get the correct position
+            global.stage.get_actor_at_pos(Clutter.PickMode.REACTIVE, 0, 0);
             let [posX, posY] = icon.get_transformed_position();
             let thumbnailCenter = posX + icon.width / 2;
             let [childMinWidth, childNaturalWidth] = this._thumbnails.actor.get_preferred_width(-1);