diff --git a/js/ui/keyboard.js b/js/ui/keyboard.js
index 7df7ef16d..62df5922f 100644
--- a/js/ui/keyboard.js
+++ b/js/ui/keyboard.js
@@ -1608,7 +1608,8 @@ class Keyboard extends St.BoxLayout {
              * we allow the OSK being smaller than 1/3rd of the monitor height
              * there.
              */
-            this.height = Math.min(maxHeight, this.get_preferred_height(monitor.width));
+            const [, natHeight] = this.get_preferred_height(monitor.width);
+            this.height = Math.min(maxHeight, natHeight);
         }
     }