diff --git a/sphinx/ext/intersphinx.py b/sphinx/ext/intersphinx.py
index e190cf0f1..33e218531 100644
--- a/sphinx/ext/intersphinx.py
+++ b/sphinx/ext/intersphinx.py
@@ -244,7 +244,7 @@ def load_mappings(app):
             # files; remote ones only if the cache time is expired
             if '://' not in inv or uri not in inventories.cache \
                     or inventories.cache[uri][1] < cache_time:
-                safe_inv_url = _get_safe_url(inv)  # type: ignore
+                safe_inv_url = _get_safe_url(inv)
                 logger.info('loading intersphinx inventory from %s...', safe_inv_url)
                 try:
                     invdata = fetch_inventory(app, uri, inv)
diff --git a/sphinx/util/logging.py b/sphinx/util/logging.py
index d84535042..33b66f9c1 100644
--- a/sphinx/util/logging.py
+++ b/sphinx/util/logging.py
@@ -124,7 +124,7 @@ class SphinxWarningLogRecord(SphinxLogRecord):
 class SphinxLoggerAdapter(logging.LoggerAdapter):
     """LoggerAdapter allowing ``type`` and ``subtype`` keywords."""
 
-    def log(self, level, msg, *args, **kwargs):  # type: ignore
+    def log(self, level, msg, *args, **kwargs):
         # type: (Union[int, str], unicode, Any, Any) -> None
         if isinstance(level, int):
             super(SphinxLoggerAdapter, self).log(level, msg, *args, **kwargs)
diff --git a/sphinx/writers/html.py b/sphinx/writers/html.py
index d4fe70234..eb2cb9049 100644
--- a/sphinx/writers/html.py
+++ b/sphinx/writers/html.py
@@ -576,7 +576,7 @@ class HTMLTranslator(BaseTranslator):
             self.context.append('</a>')
         elif 'filename' in node:
             atts['class'] += ' internal'
-            atts['href'] = posixpath.join(self.builder.dlpath, node['filename'])
+            atts['href'] = posixpath.join(self.builder.dlpath, node['filename'])  # type: ignore  # NOQA
             self.body.append(self.starttag(node, 'a', '', **atts))
             self.context.append('</a>')
         else:
diff --git a/sphinx/writers/html5.py b/sphinx/writers/html5.py
index cec5faeac..115e44c86 100644
--- a/sphinx/writers/html5.py
+++ b/sphinx/writers/html5.py
@@ -522,7 +522,7 @@ class HTML5Translator(BaseTranslator):
             self.context.append('</a>')
         elif 'filename' in node:
             atts['class'] += ' internal'
-            atts['href'] = posixpath.join(self.builder.dlpath, node['filename'])
+            atts['href'] = posixpath.join(self.builder.dlpath, node['filename'])  # type: ignore  # NOQA
             self.body.append(self.starttag(node, 'a', '', **atts))
             self.context.append('</a>')
         else: