diff --git a/classes/ObjectModel.php b/classes/ObjectModel.php
index bd6cb4bbe..e61094944 100644
--- a/classes/ObjectModel.php
+++ b/classes/ObjectModel.php
@@ -1885,6 +1885,8 @@ abstract class ObjectModelCore implements Core_Foundation_Database_EntityInterfa
                 );
             }
 
+            Hook::exec('actionObject'.$class.'GetDefinition', array('definition' => &$definition));
+
             if ($field) {
                 return isset($definition['fields'][$field]) ? $definition['fields'][$field] : null;
             }