diff --git a/prototype/VideoPlayer.m b/prototype/VideoPlayer.m
index 7930aa6..0cca6a9 100644
--- a/prototype/VideoPlayer.m
+++ b/prototype/VideoPlayer.m
@@ -2,6 +2,8 @@
 
 @import UIKit;
 @import AVFoundation;
+@import Dispatch;
+
 
 @interface VideoPlayerView : UIView
 @property (nonatomic) AVPlayer *player;
@@ -69,7 +71,10 @@ - (int) isPlaying {
         return YES;
     }
     
-    vpv.frame = window.frame;
+    dispatch_async(dispatch_get_main_queue(), ^{
+        vpv.frame = window.frame;
+    });
+    
     
     if (! player.rate) {
         [ self stop ];