diff --git a/common/lib/xmodule/xmodule/lti_module.py b/common/lib/xmodule/xmodule/lti_module.py
index 4728518894..2ef1c84813 100644
--- a/common/lib/xmodule/xmodule/lti_module.py
+++ b/common/lib/xmodule/xmodule/lti_module.py
@@ -44,7 +44,8 @@ class LTIFields(object):
 
 
 class LTIModule(LTIFields, XModule):
-    '''Module provides LTI integration to course.
+    '''
+    Module provides LTI integration to course.
 
     Except usual xmodule structure it proceeds with oauth signing.
     How it works::
@@ -127,7 +128,9 @@ class LTIModule(LTIFields, XModule):
     js_module_name = "LTI"
 
     def get_html(self):
-        """ Renders parameters to template. """
+        """
+        Renders parameters to template.
+        """
 
         # Obtains client_key and client_secret credentials from current course:
         course_id = self.runtime.course_id
@@ -176,7 +179,8 @@ class LTIModule(LTIFields, XModule):
         return self.system.render_template('lti.html', context)
 
     def oauth_params(self, custom_parameters, client_key, client_secret):
-        """Signs request and returns signature and oauth parameters.
+        """
+        Signs request and returns signature and oauth parameters.
 
         `custom_paramters` is dict of parsed `custom_parameter` field
 
@@ -236,5 +240,7 @@ class LTIModule(LTIFields, XModule):
 
 
 class LTIModuleDescriptor(LTIFields, MetadataOnlyEditingDescriptor):
-    """LTI Descriptor. No export/import to xml."""
+    """
+    LTIModuleDescriptor provides no export/import to xml.
+    """
     module_class = LTIModule
diff --git a/lms/djangoapps/courseware/tests/test_lti.py b/lms/djangoapps/courseware/tests/test_lti.py
index cf74ea2660..e863d47636 100644
--- a/lms/djangoapps/courseware/tests/test_lti.py
+++ b/lms/djangoapps/courseware/tests/test_lti.py
@@ -8,6 +8,9 @@ from collections import OrderedDict
 class TestLTI(BaseTestXmodule):
     """
     Integration test for lti xmodule.
+
+    It checks overall code, by assuring that context that goes to template is correct.
+    As part of that, checks oauth signature generation by mocking signing function of `requests` library.
     """
     CATEGORY = "lti"
 
@@ -42,7 +45,9 @@ class TestLTI(BaseTestXmodule):
         saved_sign = requests.auth.Client.sign
 
         def mocked_sign(self, *args, **kwargs):
-            """Mocked oauth1 sign function"""
+            """
+            Mocked oauth1 sign function.
+            """
             # self is <oauthlib.oauth1.rfc5849.Client object> here:
             _, headers, _ = saved_sign(self, *args, **kwargs)
             # we should replace noonce, timestamp and signed_signature in headers:
@@ -57,7 +62,9 @@ class TestLTI(BaseTestXmodule):
         requests.auth.Client.sign = mocked_sign
 
     def test_lti_constructor(self):
-        """Make sure that all parameters extracted """
+        """
+        Makes sure that all parameters extracted.
+        """
         self.runtime.render_template = lambda template, context: context
         generated_context = self.item_module.get_html()
         expected_context = {