From 79d8bfb9e03216c99ba2e734d425361b87ec2f84 Mon Sep 17 00:00:00 2001
From: Eric Larson <larson.eric.d@gmail.com>
Date: Fri, 22 May 2020 11:55:14 -0400
Subject: [PATCH] BUG: Fix check for meth

---
 sphinx/util/inspect.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sphinx/util/inspect.py b/sphinx/util/inspect.py
index 6ba698eed9..15f0d66e27 100644
--- a/sphinx/util/inspect.py
+++ b/sphinx/util/inspect.py
@@ -726,7 +726,7 @@ def getdoc(obj: Any, attrgetter: Callable = safe_getattr,
             # This tries to obtain the docstring from super classes.
             for basecls in getattr(cls, '__mro__', []):
                 meth = safe_getattr(basecls, name, None)
-                if meth:
+                if meth is not None:
                     doc = inspect.getdoc(meth)
                     if doc:
                         break