diff --git a/tools/e2e/11-menus.mjs b/tools/e2e/11-menus.mjs
index 3f33c2a4..06dc2448 100644
--- a/tools/e2e/11-menus.mjs
+++ b/tools/e2e/11-menus.mjs
@@ -25,15 +25,18 @@ export async function menus(t) {
   await sleep(150);
 
   // 11a. A picker with 40+ entries is capped in height and stays fully on screen instead of
-  //     running off the bottom edge.
+  //     running off the bottom edge. The cap is a share of the canvas, not a constant: a tenth is
+  //     left free at either end, so the number to beat is read off the screen rather than written
+  //     down here – 40 rows would be well over a thousand pixels without it.
   const parentRow = await json("__gm.inspectorField('Parent')");
   await click(parentRow.x, parentRow.y);
   const rect = await json('__gm.overlayRect()');
   const screenHeight = await json('window.innerHeight');
+  const budget = screenHeight - Math.round(screenHeight * 0.1) * 2;
   check(
-    'a long parent picker is capped instead of growing with the object count',
-    rect && rect.h < 420,
-    JSON.stringify(rect),
+    'a long parent picker is capped to the canvas budget instead of growing with the object count',
+    rect && rect.h <= budget,
+    JSON.stringify({ rect, budget, screenHeight }),
   );
   check(
     'the capped picker stays fully on screen',