diff --git a/app/src/main/java/net/schueller/peertube/activity/VideoPlayActivity.java b/app/src/main/java/net/schueller/peertube/activity/VideoPlayActivity.java
index 398312f..e02030a 100644
--- a/app/src/main/java/net/schueller/peertube/activity/VideoPlayActivity.java
+++ b/app/src/main/java/net/schueller/peertube/activity/VideoPlayActivity.java
@@ -295,7 +295,11 @@ public class VideoPlayActivity extends AppCompatActivity {
 
         videoPlayerFragment.setIsFullscreen(isLandscape);
 
-        getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
+        if ( isLandscape ) {
+            getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
+        } else {
+            getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
+        }
     }
 
     @Override