diff --git a/site/posts/2021-04-18-grouping.md b/site/posts/2021-04-18-grouping.md
index 8c017dc..1ea92e1 100644
--- a/site/posts/2021-04-18-grouping.md
+++ b/site/posts/2021-04-18-grouping.md
@@ -84,8 +84,8 @@ And now it can parse grouped expressions:
 ```rust
 fn main() {
 	let tokens = tokenize("(1)");
-	if let node = parse(tokens) {
-		println!("node: {:#?}", node);
+	if let node = parse(&tokens) {
+		println!("node: {:#?}", &node);
 	}
 }
 ```