diff --git a/tools/codestyle/docstring_checker.py b/tools/codestyle/docstring_checker.py
index 54a690462699651d3e14f9b24383df01a9740336..8d4b24a0cf6b743b72dca58fd885f927560964bf 100644
--- a/tools/codestyle/docstring_checker.py
+++ b/tools/codestyle/docstring_checker.py
@@ -291,6 +291,8 @@ class DocstringChecker(BaseChecker):
             True if successful otherwise False.
         """
 
+        if node.name.startswith("__") or node.name.startswith("_"):
+            return True
         find = False
         for t in node.body:
             if not isinstance(t, astroid.Return):
@@ -316,6 +318,8 @@ class DocstringChecker(BaseChecker):
         Returns:
             True if successful otherwise False.
         """
+        if node.name.startswith("__") or node.name.startswith("_"):
+            return True
         args = []
         for arg in node.args.get_children():
             if (not isinstance(arg, astroid.AssignName)) \