diff --git a/controllers/class.Preview.php b/controllers/class.Preview.php
index c626794cb..6fc125827 100644
--- a/controllers/class.Preview.php
+++ b/controllers/class.Preview.php
@@ -68,6 +68,7 @@ class SeedDMS_Controller_Preview extends SeedDMS_Controller_Common {
 			}
 			header('Content-Type: image/png');
 			$previewer->getPreview($content);
+			return true;
 		}
 	} /* }}} */
 
@@ -106,6 +107,7 @@ class SeedDMS_Controller_Preview extends SeedDMS_Controller_Common {
 			}
 			header('Content-Type: image/png');
 			$previewer->getPreview($object);
+			return true;
 		}
 	} /* }}} */