diff --git a/tox.ini b/tox.ini
index 85ca31f546d..3bfa3140480 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,6 +11,8 @@ ignore=
     ; suggests using f"{!r}" instead of manual quotes (flake8-bugbear)
     ; Doesn't work at 3.7
     B028
+    ; Broken in two cases https://github.com/PyCQA/flake8-bugbear/issues/451
+    B038
 
 exclude=
     build,