diff --git a/lib/a11ym.js b/lib/a11ym.js
index f5e51df..38a2311 100644
--- a/lib/a11ym.js
+++ b/lib/a11ym.js
@@ -59,7 +59,8 @@ var defaultOptions = {
     httpAuthPassword: undefined,
     httpTlsDisable  : undefined,
     verbose         : true,
-    ignoreRobotsTxt : false
+    ignoreRobotsTxt : false,
+    processCallback: undefined
 };
 
 // Set the logger.
@@ -204,6 +205,12 @@ module.exports = {
         tester      = Tester(options);
         maximumUrls = +options.maximumUrls;
 
+        if (typeof (options.processCallback) === 'function') {
+            process.on('exit', function(code) {
+                options.processCallback(code);
+            });
+        }
+
         testQueue = async.queue(
             function (url, onTaskComplete) {
                 if (--maximumUrls < 0) {