diff --git a/MessageDisplayKit/Classes/Controllers/XHMessageTableViewController/XHMessageTableViewController.m b/MessageDisplayKit/Classes/Controllers/XHMessageTableViewController/XHMessageTableViewController.m
index 78479ec..06a47fb 100644
--- a/MessageDisplayKit/Classes/Controllers/XHMessageTableViewController/XHMessageTableViewController.m
+++ b/MessageDisplayKit/Classes/Controllers/XHMessageTableViewController/XHMessageTableViewController.m
@@ -708,7 +708,7 @@ - (BOOL)shouldAutorotate {
 }
 
 - (NSUInteger)supportedInterfaceOrientations {
-    return UIInterfaceOrientationMaskPortrait;
+    return (NSUInteger)UIInterfaceOrientationMaskPortrait;
 }
 
 - (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {