diff --git a/lib/key_generators/random.js b/lib/key_generators/random.js
index 767e26b..b92615f 100644
--- a/lib/key_generators/random.js
+++ b/lib/key_generators/random.js
@@ -1,20 +1,22 @@
 module.exports = class RandomKeyGenerator {
 
-  // Initialize a new generator with the given keySpace
-  constructor(options = {}) {
-    this.keyspace = options.keyspace || 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
-  }
-
-  // Generate a key of the given length
-  createKey(keyLength) {
-    var text = '';
-
-    for (var i = 0; i < keyLength; i++) {
-      const index = Math.floor(Math.random() * this.keyspace.length);
-      text += this.keyspace.charAt(index);
+    // Initialize a new generator with the given keySpace
+    constructor(options = {}) {
+        this.keyspace = options.keyspace || 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
     }
 
-    return text;
-  }
+    // Generate a key of the given length
+    createKey(keyLength) {
+        let i;
+        let text;
+        text = '';
+
+        for (i = 0; i < keyLength; i++) {
+            const index = Math.floor(Math.random() * this.keyspace.length);
+            text += this.keyspace.charAt(index);
+        }
+
+        return text;
+    }
 
 };