diff --git a/site/content/tutorial/10-transitions/05-custom-js-transitions/text.md b/site/content/tutorial/10-transitions/05-custom-js-transitions/text.md
index da775bbeb3..cc25861c7b 100644
--- a/site/content/tutorial/10-transitions/05-custom-js-transitions/text.md
+++ b/site/content/tutorial/10-transitions/05-custom-js-transitions/text.md
@@ -8,7 +8,7 @@ While you should generally use CSS for transitions as much as possible, there ar
 function typewriter(node, { speed = 50 }) {
 	const valid = (
 		node.childNodes.length === 1 &&
-		node.childNodes[0].nodeType === 3
+		node.childNodes[0].nodeType === Node.TEXT_NODE
 	);
 
 	if (!valid) {
@@ -26,4 +26,4 @@ function typewriter(node, { speed = 50 }) {
 		}
 	};
 }
-```
\ No newline at end of file
+```