diff --git a/tools/linter_lib/pep8.py b/tools/linter_lib/pep8.py
index 884cc2904d..1387c6cfee 100644
--- a/tools/linter_lib/pep8.py
+++ b/tools/linter_lib/pep8.py
@@ -78,7 +78,6 @@ def check_pep8(files):
 
     # TODO: Clear up this list of violations.
     IGNORE_FILES_PEPE261 = [
-        'zerver/tests/test_bugdown.py',
         'zerver/tests/test_events.py',
         'zerver/tests/test_messages.py',
         'zerver/tests/test_narrow.py',
diff --git a/zerver/tests/test_bugdown.py b/zerver/tests/test_bugdown.py
index 95364f4f7d..80c537dc5d 100644
--- a/zerver/tests/test_bugdown.py
+++ b/zerver/tests/test_bugdown.py
@@ -102,8 +102,8 @@ class FencedBlockPreprocessorTest(TestCase):
         processor = bugdown.fenced_code.FencedBlockPreprocessor(None)
 
         # Simulate code formatting.
-        processor.format_code = lambda lang, code: lang + ':' + code # type: ignore # mypy doesn't allow monkey-patching functions
-        processor.placeholder = lambda s: '**' + s.strip('\n') + '**' # type: ignore # https://github.com/python/mypy/issues/708
+        processor.format_code = lambda lang, code: lang + ':' + code  # type: ignore # mypy doesn't allow monkey-patching functions
+        processor.placeholder = lambda s: '**' + s.strip('\n') + '**'  # type: ignore # https://github.com/python/mypy/issues/708
 
         markdown = [
             '``` .py',
@@ -141,8 +141,8 @@ class FencedBlockPreprocessorTest(TestCase):
         processor = bugdown.fenced_code.FencedBlockPreprocessor(None)
 
         # Simulate code formatting.
-        processor.format_code = lambda lang, code: lang + ':' + code # type: ignore # mypy doesn't allow monkey-patching functions
-        processor.placeholder = lambda s: '**' + s.strip('\n') + '**' # type: ignore # https://github.com/python/mypy/issues/708
+        processor.format_code = lambda lang, code: lang + ':' + code  # type: ignore # mypy doesn't allow monkey-patching functions
+        processor.placeholder = lambda s: '**' + s.strip('\n') + '**'  # type: ignore # https://github.com/python/mypy/issues/708
 
         markdown = [
             '~~~ quote',
@@ -605,7 +605,7 @@ class BugdownTest(ZulipTestCase):
             directly for testing is kind of awkward
             '''
             class Instance(object):
-                realm_id = None # type: Optional[int]
+                realm_id = None  # type: Optional[int]
             instance = Instance()
             instance.realm_id = realm.id
             flush_realm_filter(sender=None, instance=instance)