diff --git a/lib/God.js b/lib/God.js
index 516be967..e5c9fee8 100644
--- a/lib/God.js
+++ b/lib/God.js
@@ -155,7 +155,8 @@ God.handleExit = function handleExit(clu, exit_code) {
  */
 God.executeApp = function executeApp(env, cb) {
   // Check if this is and old temporary process
-  if (env['pm_id'].search('_old_') != -1)
+  if (env['pm_id'] != undefined &&
+      env['pm_id'].search('_old_') != -1)
     return false;
 
   var env_copy = Common.serialize(env);