diff --git a/README.md b/README.md
index a57316f..11c029d 100644
--- a/README.md
+++ b/README.md
@@ -135,7 +135,7 @@ later, if you need them.
 
 `server.js`:
 
-```bash
+```js
 require("greenlock-express")
 	.init(getConfig)
 	.serve(worker);
@@ -143,14 +143,14 @@ require("greenlock-express")
 function getConfig() {
 	return {
 		// uses name and version as part of the ACME client user-agent
-    // uses author as the contact for support notices
+		// uses author as the contact for support notices
 		package: require("./package.json")
 	};
 }
 
 function worker(server) {
 	// Works with any Node app (Express, etc)
-  var app = require('my-express-app.js');
+	var app = require("my-express-app.js");
 	server.serveApp(app);
 }
 ```
diff --git a/main.js b/main.js
index 018481b..661b672 100644
--- a/main.js
+++ b/main.js
@@ -32,5 +32,5 @@ if (major < 11 || (11 === major && minor < 2)) {
 
 if (shouldUpgrade) {
 	console.warn("Warning: Please upgrade to node v11.2.0 or greater.");
-  console.warn();
+	console.warn();
 }
diff --git a/master.js b/master.js
index 235ec0e..fdc45a9 100644
--- a/master.js
+++ b/master.js
@@ -75,11 +75,11 @@ Master._spawnWorkers = function(opts, greenlock) {
 		}
 	}
 
-  cluster.on('exit', function () {
-    setTimeout(function () {
-      process.exit(3);
-    }, 100);
-  });
+	cluster.on("exit", function() {
+		setTimeout(function() {
+			process.exit(3);
+		}, 100);
+	});
 
 	var workers = range(numWorkers);
 	function next() {