diff --git a/README.md b/README.md
index 500a586..e1ee3ea 100644
--- a/README.md
+++ b/README.md
@@ -9,9 +9,11 @@
 
 In Japan, a schoolgirl was caught by the police for putting a link to a website with an endless loop of alert in JavaScript like this:
 
-        while (1) {
-          alert("!");
-        }
+```js
+while (1) {
+  alert("!");
+}
+```
 
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