diff --git a/docs/misc/changelog.rst b/docs/misc/changelog.rst
index d7f4775..a8bf9b7 100644
--- a/docs/misc/changelog.rst
+++ b/docs/misc/changelog.rst
@@ -40,6 +40,7 @@ Documentation:
 - Added policy-distillation-baselines to project page (@CUN-bjy)
 - Added ONNX export instructions (@batu)
 - Update read the doc env (fixed ``docutils`` issue)
+- Fix PPO environment name (@IljaAvadiev)
 
 
 Release 1.2.0 (2021-09-03)
@@ -783,4 +784,4 @@ And all the contributors:
 @tirafesi @blurLake @koulakis @joeljosephjin @shwang @rk37 @andyshih12 @RaphaelWag @xicocaio
 @diditforlulz273 @liorcohen5 @ManifoldFR @mloo3 @SwamyDev @wmmc88 @megan-klaiber @thisray
 @tfederico @hn2 @LucasAlegre @AptX395 @zampanteymedio @JadenTravnik @decodyng @ardabbour @lorenz-h @mschweizer @lorepieri8 @vwxyzjn
-@ShangqunYu @PierreExeter @JacopoPan @ltbd78 @tom-doerr @Atlis @liusida @09tangriro @amy12xx @juancroldan @benblack769 @bstee615 @c-rizz @skandermoalla @MihaiAnca13 @davidblom603 @ayeright @cyprienc @wkirgsn @AechPro @CUN-bjy @batu
+@ShangqunYu @PierreExeter @JacopoPan @ltbd78 @tom-doerr @Atlis @liusida @09tangriro @amy12xx @juancroldan @benblack769 @bstee615 @c-rizz @skandermoalla @MihaiAnca13 @davidblom603 @ayeright @cyprienc @wkirgsn @AechPro @CUN-bjy @batu @IljaAvadiev
diff --git a/docs/modules/ppo.rst b/docs/modules/ppo.rst
index 3b0d720..3aab653 100644
--- a/docs/modules/ppo.rst
+++ b/docs/modules/ppo.rst
@@ -50,7 +50,7 @@ Example
 
 This example is only to demonstrate the use of the library and its functions, and the trained agents may not solve the environments. Optimized hyperparameters can be found in RL Zoo `repository <https://github.com/DLR-RM/rl-baselines3-zoo>`_.
 
-Train a PPO agent on ``Pendulum-v0`` using 4 environments.
+Train a PPO agent on ``CartPole-v1`` using 4 environments.
 
 .. code-block:: python