diff --git a/Riot/Modules/Room/RoomViewController.m b/Riot/Modules/Room/RoomViewController.m
index 99eff65aa..e287353c5 100644
--- a/Riot/Modules/Room/RoomViewController.m
+++ b/Riot/Modules/Room/RoomViewController.m
@@ -4938,7 +4938,9 @@ static CGSize kThreadListBarButtonItemImageSize;
         {
             readMarkerTableViewCell = roomBubbleTableViewCell;
             
-            [self checkReadMarkerVisibility];
+            dispatch_async(dispatch_get_main_queue(), ^{
+                [self checkReadMarkerVisibility];
+            });
         }
     }
 }