diff --git a/lib/Doctrine/ORM/Tools/Event/GenerateSchemaEventArgs.php b/lib/Doctrine/ORM/Tools/Event/GenerateSchemaEventArgs.php
index ffa5d022c..36455621c 100644
--- a/lib/Doctrine/ORM/Tools/Event/GenerateSchemaEventArgs.php
+++ b/lib/Doctrine/ORM/Tools/Event/GenerateSchemaEventArgs.php
@@ -33,7 +33,14 @@ use Doctrine\ORM\EntityManager;
  */
 class GenerateSchemaEventArgs extends EventArgs
 {
+    /**
+     * @var \Doctrine\ORM\EntityManager
+     */
     private $em;
+
+    /**
+     * @var \Doctrine\DBAL\Schema\Schema
+     */
     private $schema;
 
     /**
diff --git a/lib/Doctrine/ORM/Tools/Event/GenerateSchemaTableEventArgs.php b/lib/Doctrine/ORM/Tools/Event/GenerateSchemaTableEventArgs.php
index d786e9a73..9e68ae6e9 100644
--- a/lib/Doctrine/ORM/Tools/Event/GenerateSchemaTableEventArgs.php
+++ b/lib/Doctrine/ORM/Tools/Event/GenerateSchemaTableEventArgs.php
@@ -33,8 +33,19 @@ use Doctrine\DBAL\Schema\Table;
  */
 class GenerateSchemaTableEventArgs extends EventArgs
 {
+    /**
+     * @var \Doctrine\ORM\Mapping\ClassMetadata
+     */
     private $classMetadata;
+
+    /**
+     * @var \Doctrine\DBAL\Schema\Schema
+     */
     private $schema;
+
+    /**
+     * @var \Doctrine\DBAL\Schema\Table
+     */
     private $classTable;
 
     /**