diff --git a/meteos/api/middleware/fault.py b/meteos/api/middleware/fault.py
index 056cbcd..5a15bd8 100644
--- a/meteos/api/middleware/fault.py
+++ b/meteos/api/middleware/fault.py
@@ -55,8 +55,8 @@ class FaultWrapper(base_wsgi.Middleware):
         if headers:
             outer.headers = headers
         # NOTE(johannes): We leave the explanation empty here on
-        # purpose. It could possibly have sensitive information
-        # that should not be returned back to the user. See
+        # purpose. It could have sensitive information
+        # that should not be return back to the user. See
         # bugs 868360 and 874472
         # NOTE(eglynn): However, it would be over-conservative and
         # inconsistent with the EC2 API to hide every exception,
diff --git a/meteos/api/openstack/api_version_request.py b/meteos/api/openstack/api_version_request.py
index f0ce3d1..3e79954 100644
--- a/meteos/api/openstack/api_version_request.py
+++ b/meteos/api/openstack/api_version_request.py
@@ -21,20 +21,20 @@ from meteos import exception
 from meteos.i18n import _
 from meteos import utils
 
-# Define the minimum and maximum version of the API across all of the
+# Define the minimum and maximum version of the API across all the
 # REST API. The format of the version is:
 # X.Y where:
 #
 # - X will only be changed if a significant backwards incompatible API
 # change is made which affects the API as whole. That is, something
-# that is only very very rarely incremented.
+# that is only very rarely incremented.
 #
 # - Y when you make any change to the API. Note that this includes
 # semantic changes which may not affect the input or output formats or
 # even originate in the API code layer. We are not distinguishing
 # between backwards compatible and backwards incompatible changes in
 # the versioning system. It must be made clear in the documentation as
-# to what is a backwards compatible change and what is a backwards
+# to what is a backward compatible change and what is a backward
 # incompatible one.
 
 #
@@ -49,7 +49,7 @@ REST_API_VERSION_HISTORY = """
 
 # The minimum and maximum versions of the API supported
 # The default api version request is defined to be the
-# the minimum version of the API supported.
+# minimum version of the API supported.
 _MIN_API_VERSION = "1.0"
 _MAX_API_VERSION = "1.0"
 DEFAULT_API_VERSION = _MIN_API_VERSION
diff --git a/meteos/api/openstack/wsgi.py b/meteos/api/openstack/wsgi.py
index de1a001..3598219 100644
--- a/meteos/api/openstack/wsgi.py
+++ b/meteos/api/openstack/wsgi.py
@@ -716,7 +716,7 @@ class Resource(wsgi.Application):
                                        **action_args)
                 except exception.VersionNotFoundForAPIMethod:
                     # If an attached extension (@wsgi.extends) for the
-                    # method has no version match its not an error. We
+                    # method has no version match it is not an error. We
                     # just don't run the extends code
                     continue
                 except Fault as ex:
diff --git a/meteos/tests/fake_notifier.py b/meteos/tests/fake_notifier.py
index f7fa509..831cb8a 100644
--- a/meteos/tests/fake_notifier.py
+++ b/meteos/tests/fake_notifier.py
@@ -51,7 +51,7 @@ class FakeNotifier(object):
     def _notify(self, priority, ctxt, event_type, payload):
         payload = self._serializer.serialize_entity(ctxt, payload)
         # NOTE(sileht): simulate the kombu serializer
-        # this permit to raise an exception if something have not
+        # this permit to raising an exception if something have not
         # been serialized correctly
         jsonutils.to_primitive(payload)
         msg = dict(publisher_id=self.publisher_id,
diff --git a/meteos/utils.py b/meteos/utils.py
index dd7d456..4e6132f 100644
--- a/meteos/utils.py
+++ b/meteos/utils.py
@@ -97,10 +97,10 @@ class SSHPool(pools.Pool):
                         timeout=self.conn_timeout)
             # Paramiko by default sets the socket timeout to 0.1 seconds,
             # ignoring what we set through the sshclient. This doesn't help for
-            # keeping long lived connections. Hence we have to bypass it, by
+            # keeping long lived connections. Hence, we have to bypass it, by
             # overriding it after the transport is initialized. We are setting
             # the sockettimeout to None and setting a keepalive packet so that,
-            # the server will keep the connection open. All that does is send
+            # the server will keep the connection open. All that does is sent
             # a keepalive packet every ssh_conn_timeout seconds.
             if self.conn_timeout:
                 transport = ssh.get_transport()
@@ -273,7 +273,7 @@ def walk_class_hierarchy(clazz, encountered=None):
     for subclass in clazz.__subclasses__():
         if subclass not in encountered:
             encountered.append(subclass)
-            # drill down to leaves first
+            # drill down to leave first
             for subsubclass in walk_class_hierarchy(subclass, encountered):
                 yield subsubclass
             yield subclass