diff --git a/examples/drone/hover_env.py b/examples/drone/hover_env.py
index 3d48d6b3..47d25d8c 100644
--- a/examples/drone/hover_env.py
+++ b/examples/drone/hover_env.py
@@ -64,6 +64,8 @@ def __init__(self, num_envs, env_cfg, obs_cfg, reward_cfg, command_cfg, show_vie
                                     ),
                                 ),
                             )
+        else:
+            self.target = None
 
         # add camera
         if self.env_cfg["visualize_camera"]: