diff --git a/examples/killslow.js b/examples/killslow.js
new file mode 100644
index 00000000..e2309352
--- /dev/null
+++ b/examples/killslow.js
@@ -0,0 +1,5 @@
+
+
+setTimeout(function() {
+  throw new Error('ok');
+}, 1100);
diff --git a/lib/ProcessContainer.js b/lib/ProcessContainer.js
index d52a84c1..8fa988f6 100644
--- a/lib/ProcessContainer.js
+++ b/lib/ProcessContainer.js
@@ -104,16 +104,12 @@ function exec(script, outFile, errFile) {
             }
         });
 
-
-        process.exit(cst.CODE_UNCAUGHTEXCEPTION);
-        // if (!process.listeners('uncaughtException').filter(function (listener) {
-        //     return listener !== uncaughtListener;
-        // }).length) {
-        //   stderr.write(err.stack);
-        //   process.exit(cst.CODE_UNCAUGHTEXCEPTION);
-        // }
-
-
+        if (!process.listeners('uncaughtException').filter(function (listener) {
+            return listener !== uncaughtListener;
+        }).length) {
+          stderr.write(err.stack);
+          process.exit(cst.CODE_UNCAUGHTEXCEPTION);
+        }
       });