diff --git a/examples/deepmind_control.py b/examples/deepmind_control.py
index 5dae04fb..32979114 100644
--- a/examples/deepmind_control.py
+++ b/examples/deepmind_control.py
@@ -5,8 +5,12 @@
 
 import d3rlpy
 
-# You need to install DeepMind Control and Shimmy beforehands as follows:
+# You need to install DeepMind Control (DMC) and Shimmy beforehands as follows:
+#
 # $ d3rlpy install dm_control
+#
+# After you install the packages, d3rlpy internally registers DMC environments
+# for Gymnasium.
 
 
 def main() -> None: