diff --git a/2-ui/1-document/07-modifying-document/10-clock-setinterval/solution.md b/2-ui/1-document/07-modifying-document/10-clock-setinterval/solution.md
index 55debebf..1414e90c 100644
--- a/2-ui/1-document/07-modifying-document/10-clock-setinterval/solution.md
+++ b/2-ui/1-document/07-modifying-document/10-clock-setinterval/solution.md
@@ -44,6 +44,7 @@ function clockStart() { // run the clock
     timerId = setInterval(update, 1000);
   }
   update(); // (*)
+}
 
 function clockStop() {
   clearInterval(timerId);