diff --git a/mani_skill2/examples/demo_manual_control.py b/mani_skill2/examples/demo_manual_control.py
index c83428ff..a24086b2 100644
--- a/mani_skill2/examples/demo_manual_control.py
+++ b/mani_skill2/examples/demo_manual_control.py
@@ -75,6 +75,7 @@ def render_wait():
         if not args.enable_sapien_viewer:
             return
         while True:
+            env.render_human()
             sapien_viewer = env.viewer
             if sapien_viewer.window.key_down("0"):
                 break