diff --git a/lib/commit-message.js b/lib/commit-message.js
index <HASH>..<HASH> 100644
--- a/lib/commit-message.js
+++ b/lib/commit-message.js
@@ -27,7 +27,7 @@ var config = {
 function CommitMessage(message) {
     this._errors = [];
 
-    var cfg = config;
+    var cfg = this.config;
     var log = this._log.bind(this);
 
     if (!cfg.pattern[0].test(message)) {
Use config correctly, from the prototype