diff --git a/docs/misc/changelog.rst b/docs/misc/changelog.rst
index 43f9a08..10334d4 100644
--- a/docs/misc/changelog.rst
+++ b/docs/misc/changelog.rst
@@ -52,6 +52,7 @@ Documentation:
 - Fixed typo in install doc(@jlp-ue)
 - Clarified and standardized verbosity documentation
 - Added link to a GitHub issue in the custom policy documentation (@AlexPasqua)
+- Fixed typos (@Akhilez)
 
 
 Release 1.6.0 (2022-07-11)
@@ -1040,4 +1041,4 @@ And all the contributors:
 @simoninithomas @armandpl @manuel-delverme @Gautam-J @gianlucadecola @buoyancy99 @caburu @xy9485
 @Gregwar @ycheng517 @quantitative-technologies @bcollazo @git-thor @TibiGG @cool-RR @MWeltevrede
 @Melanol @qgallouedec @francescoluciano @jlp-ue @burakdmb @timothe-chaumont @honglu2875
-@anand-bala @hughperkins @sidney-tio @AlexPasqua @dominicgkerr
+@anand-bala @hughperkins @sidney-tio @AlexPasqua @dominicgkerr @Akhilez @Rocamonde
diff --git a/stable_baselines3/common/on_policy_algorithm.py b/stable_baselines3/common/on_policy_algorithm.py
index 4063680..0589fe1 100644
--- a/stable_baselines3/common/on_policy_algorithm.py
+++ b/stable_baselines3/common/on_policy_algorithm.py
@@ -143,7 +143,7 @@ class OnPolicyAlgorithm(BaseAlgorithm):
         :param callback: Callback that will be called at each step
             (and at the beginning and end of the rollout)
         :param rollout_buffer: Buffer to fill with rollouts
-        :param n_steps: Number of experiences to collect per environment
+        :param n_rollout_steps: Number of experiences to collect per environment
         :return: True if function returned with at least `n_rollout_steps`
             collected, False if callback terminated rollout prematurely.
         """
diff --git a/stable_baselines3/ppo/ppo.py b/stable_baselines3/ppo/ppo.py
index d65201b..cfcdfb1 100644
--- a/stable_baselines3/ppo/ppo.py
+++ b/stable_baselines3/ppo/ppo.py
@@ -234,7 +234,7 @@ class PPO(OnPolicyAlgorithm):
                     # No clipping
                     values_pred = values
                 else:
-                    # Clip the different between old and new value
+                    # Clip the difference between old and new value
                     # NOTE: this depends on the reward scaling
                     values_pred = rollout_data.old_values + th.clamp(
                         values - rollout_data.old_values, -clip_range_vf, clip_range_vf