diff --git a/samples/calc-02/index.js b/samples/calc-02/index.js
index ef8cc9c..46f7290 100644
--- a/samples/calc-02/index.js
+++ b/samples/calc-02/index.js
@@ -438,7 +438,6 @@ function openConstMenu() {
 	constMenuEl = document.createElement('div');
 	constMenuEl.className = 'mode-menu';
 	constMenuEl.style.top = `${rect.bottom + 6 + window.scrollY}px`;
-	constMenuEl.style.left = `${rect.left + window.scrollX}px`;
 	constants.forEach((constant) => {
 		const button = document.createElement('button');
 		button.type = 'button';
@@ -456,8 +455,8 @@ function openConstMenu() {
 	});
 	document.body.appendChild(constMenuEl);
 	const menuRect = constMenuEl.getBoundingClientRect();
-	const maxLeft = Math.max(8, window.innerWidth - menuRect.width - 8);
-	constMenuEl.style.left = `${Math.max(8, Math.min(maxLeft, rect.left + window.scrollX))}px`;
+	const desiredLeft = rect.right + window.scrollX - menuRect.width;
+	constMenuEl.style.left = `${Math.max(8, desiredLeft)}px`;
 }
 
 constButton.addEventListener('click', (event) => {