diff --git a/README.md b/README.md
index b6fcd37..6863461 100644
--- a/README.md
+++ b/README.md
@@ -14,24 +14,24 @@ This module exports two classes, `Throttle` and `ThrottleGroup`.
 The `opts` object may also contain options to be passed to the `stream.Transform` constructor.
 
 For example, the following code throttles stdin to stdout at 10 bytes per second:
-
-    process.stdin.pipe(new Throttle({rate: 10})).pipe(process.stdout)
-
+```js
+process.stdin.pipe(new Throttle({rate: 10})).pipe(process.stdout)
+```
 `ThrottleGroup` allows the creation of a group of streams whose aggregate bandwidth is throttled. The constructor accepts the same `opts` argument as for `Throttle`. Call `throttle` on a `ThrottleGroup` object to create a new throttled stream belonging to the group.
 
 For example, the following code creates two HTTP connections to `www.google.com:80`, and throttles their aggregate (downstream) bandwidth to 10 KB/s:
+```js
+var addr = { host: 'www.google.com', port: 80 };
+var tg = new ThrottleGroup({rate: 10240});
 
-    var addr = { host: 'www.google.com', port: 80 };
-    var tg = new ThrottleGroup({rate: 10240});
-
-    var conn1 = net.createConnection(addr),
-        conn2 = net.createConnection(addr);
-
-    var thr1 = conn1.pipe(tg.throttle()),
-        thr2 = conn2.pipe(tg.throttle());
+var conn1 = net.createConnection(addr),
+    conn2 = net.createConnection(addr);
 
-    // Reads from thr1 and thr2 are throttled to 10 KB/s in aggregate
+var thr1 = conn1.pipe(tg.throttle()),
+    thr2 = conn2.pipe(tg.throttle());
 
+// Reads from thr1 and thr2 are throttled to 10 KB/s in aggregate
+```
 ## Command line usage
 
 This package installs a `throttleproxy` binary which implements a command-line utility for throttling connections. Run `throttleproxy -h` for instructions.