diff --git a/javascript.html.markdown b/javascript.html.markdown
index f61e6c74..95808d05 100644
--- a/javascript.html.markdown
+++ b/javascript.html.markdown
@@ -207,7 +207,7 @@ while (true){
 }
 
 // Do-while loops are like while loops, except they always run at least once.
-var input
+var input;
 do {
     input = getInput();
 } while (!isValid(input))