diff --git a/docs/misc/changelog.rst b/docs/misc/changelog.rst
index ee80931c54..897726a42b 100644
--- a/docs/misc/changelog.rst
+++ b/docs/misc/changelog.rst
@@ -28,7 +28,7 @@ Others:
 Documentation:
 ^^^^^^^^^^^^^^
 - Added stable-baselines-tf2 link on Projects page. (@sophiagu)
-
+- Fixed a typo in ``stable_baselines.common.env_checker.check_env`` (@OGordon100)
 
 Release 2.10.1 (2020-08-05)
 ---------------------------
@@ -745,4 +745,4 @@ Thanks to @bjmuld @iambenzo @iandanforth @r7vme @brendenpetersen @huvar @abhiskk
 @Miffyli @dwiel @miguelrass @qxcv @jaberkow @eavelardev @ruifeng96150 @pedrohbtp @srivatsankrishnan @evilsocket
 @MarvineGothic @jdossgollin @SyllogismRXS @rusu24edward @jbulow @Antymon @seheevic @justinkterry @edbeeching
 @flodorner @KuKuXia @NeoExtended @PartiallyTyped @mmcenta @richardwu @tirafesi @caburu @johannes-dornheim @kvenkman @aakash94
-@enderdead @hardmaru @jbarsce @ColinLeongUDRI @shwang @YangRui2015 @sophiagu
+@enderdead @hardmaru @jbarsce @ColinLeongUDRI @shwang @YangRui2015 @sophiagu @OGordon100
diff --git a/stable_baselines/common/env_checker.py b/stable_baselines/common/env_checker.py
index 751b204f95..bba496b8fc 100644
--- a/stable_baselines/common/env_checker.py
+++ b/stable_baselines/common/env_checker.py
@@ -178,8 +178,8 @@ def check_env(env: gym.Env, warn: bool = True, skip_render_check: bool = True) -
     :param skip_render_check: (bool) Whether to skip the checks for the render method.
         True by default (useful for the CI)
     """
-    assert isinstance(env, gym.Env), ("You environment must inherit from gym.Env class "
-                                      " cf https://github.com/openai/gym/blob/master/gym/core.py")
+    assert isinstance(env, gym.Env), ("Your environment must inherit from the gym.Env class "
+                                      "cf https://github.com/openai/gym/blob/master/gym/core.py")
 
     # ============= Check the spaces (observation and action) ================
     _check_spaces(env)