diff --git a/flask/app.py b/flask/app.py
index 4e97605e..58ccbae4 100644
--- a/flask/app.py
+++ b/flask/app.py
@@ -289,7 +289,7 @@ class Flask(_PackageBoundObject):
         'SESSION_COOKIE_SECURE':                False,
         'SESSION_REFRESH_EACH_REQUEST':         True,
         'MAX_CONTENT_LENGTH':                   None,
-        'SEND_FILE_MAX_AGE_DEFAULT':            12 * 60 * 60, # 12 hours
+        'SEND_FILE_MAX_AGE_DEFAULT':            12 * 60 * 60,  # 12 hours
         'TRAP_BAD_REQUEST_ERRORS':              False,
         'TRAP_HTTP_EXCEPTIONS':                 False,
         'EXPLAIN_TEMPLATE_LOADING':             False,
diff --git a/flask/helpers.py b/flask/helpers.py
index 9c85fa00..cd29095b 100644
--- a/flask/helpers.py
+++ b/flask/helpers.py
@@ -573,7 +573,7 @@ def safe_join(directory, filename):
         def wiki_page(filename):
             filename = safe_join(app.config['WIKI_FOLDER'], filename)
             with open(filename, 'rb') as fd:
-                content = fd.read() # Read and process the file content...
+                content = fd.read()  # Read and process the file content...
 
     :param directory: the base directory.
     :param filename: the untrusted filename relative to that directory.
diff --git a/tests/test_templating.py b/tests/test_templating.py
index 5aaf9081..cda49d9b 100644
--- a/tests/test_templating.py
+++ b/tests/test_templating.py
@@ -287,8 +287,8 @@ def test_iterable_loader():
     @app.route('/')
     def index():
         return flask.render_template(
-            ['no_template.xml', # should skip this one
-            'simple_template.html', # should render this
+            ['no_template.xml',  # should skip this one
+            'simple_template.html',  # should render this
             'context_template.html'],
             value=23)