diff --git a/fairmotion/viz/pyrender_visualizer.py b/fairmotion/viz/pyrender_visualizer.py
index e35afd8..5a5ad8c 100644
--- a/fairmotion/viz/pyrender_visualizer.py
+++ b/fairmotion/viz/pyrender_visualizer.py
@@ -1,3 +1,5 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+
 import os
 import sys
 
@@ -316,4 +318,4 @@ def init_pyrender(self):
         scale=20.33
     )
 
-    viewer.to_html5_video()
\ No newline at end of file
+    viewer.to_html5_video()