diff --git a/mastodon/src/main/java/org/joinmastodon/android/ui/photoviewer/PhotoViewer.java b/mastodon/src/main/java/org/joinmastodon/android/ui/photoviewer/PhotoViewer.java
index 6772fe741..7eded4094 100644
--- a/mastodon/src/main/java/org/joinmastodon/android/ui/photoviewer/PhotoViewer.java
+++ b/mastodon/src/main/java/org/joinmastodon/android/ui/photoviewer/PhotoViewer.java
@@ -859,6 +859,8 @@ public class PhotoViewer implements ZoomPanView.Listener{
 
 		@Override
 		public void onVideoSizeChanged(MediaPlayer mp, int width, int height){
+			if(width<=0 || height<=0)
+				return;
 			FrameLayout.LayoutParams params=(FrameLayout.LayoutParams) wrap.getLayoutParams();
 			params.width=width;
 			params.height=height;