diff --git a/src/error/PhutilAggregateException.php b/src/error/PhutilAggregateException.php
index eec0305..17107fb 100644
--- a/src/error/PhutilAggregateException.php
+++ b/src/error/PhutilAggregateException.php
@@ -1,62 +1,62 @@
 <?php
 
 /*
  * Copyright 2012 Facebook, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 
 /**
  * Exception that aggregates other exceptions into a single exception. For
  * example, if you have several objects which can perform a task and just want
  * at least one of them to succeed, you can do something like this:
  *
  *   $exceptions = array();
  *   $success = false;
  *   foreach ($engines as $engine) {
  *     try {
  *       $engine->doSomething();
  *       $success = true;
  *       break;
  *     } catch (Exception $ex) {
  *       $exceptions[] = $ex;
  *     }
  *   }
  *
  *   if (!$success) {
  *     throw new PhutilAggregateException("All engines failed:", $exceptions);
  *   }
  *
  * @concrete-extensible
  * @group error
  */
 class PhutilAggregateException extends Exception {
 
   private $exceptions = array();
 
   public function __construct($message, array $other_exceptions) {
     $this->exceptions = $other_exceptions;
 
     $full_message = array();
     $full_message[] = $message;
     foreach ($other_exceptions as $exception) {
-      $ex_message = $exception->getMessage();
+      $ex_message = get_class($exception).': '.$exception->getMessage();
       $ex_message = '    - '.str_replace("\n", "\n      ", $ex_message);
 
       $full_message[] = $ex_message;
     }
 
-    parent::__construct(implode("\n", $full_message));
+    parent::__construct(implode("\n", $full_message), count($other_exceptions));
   }
 
 }