diff --git a/src/linked_list.rs b/src/linked_list.rs
index 12698e2..47c9d5c 100644
--- a/src/linked_list.rs
+++ b/src/linked_list.rs
@@ -15,7 +15,7 @@ impl ListNode {
 macro_rules! list {
     () => { None };
     ( $first:expr ) => { Some(Box::new(ListNode::new($first))) };
-    ( $first:expr, $($x:expr),* ) => {
+    ( $first:expr, $($x:expr),+ ) => {
         {
             let mut head = Box::new(ListNode::new($first));
             let mut tail = &mut head;