diff --git a/fancy_gym/envs/__init__.py b/fancy_gym/envs/__init__.py
index 62ed981..f8467c4 100644
--- a/fancy_gym/envs/__init__.py
+++ b/fancy_gym/envs/__init__.py
@@ -304,7 +304,7 @@ register(
 )
 
 register(
-    id='TableTennisRndRobot-v0',
+    id='fancy/TableTennisRndRobot-v0',
     entry_point='fancy_gym.envs.mujoco:TableTennisRandomInit',
     max_episode_steps=MAX_EPISODE_STEPS_TABLE_TENNIS,
     kwargs={
@@ -314,7 +314,7 @@ register(
 )
 
 register(
-    id='TableTennisMarkovian-v0',
+    id='fancy/TableTennisMarkovian-v0',
     entry_point='fancy_gym.envs.mujoco:TableTennisMarkovian',
     max_episode_steps=MAX_EPISODE_STEPS_TABLE_TENNIS_MARKOV_VER,
     kwargs={
@@ -322,7 +322,7 @@ register(
 )
 
 register(
-    id='TableTennisRndRobotMarkovian-v0',
+    id='fancy/TableTennisRndRobotMarkovian-v0',
     entry_point='fancy_gym.envs.mujoco:TableTennisMarkovian',
     max_episode_steps=MAX_EPISODE_STEPS_TABLE_TENNIS_MARKOV_VER,
     kwargs={