diff --git a/tox.ini b/tox.ini
index b99660fb..50ec8431 100644
--- a/tox.ini
+++ b/tox.ini
@@ -43,4 +43,5 @@ max-line-length = 160
 # W503 line break before binary operator
 # E227 missing whitespace around bitwise or shift operator
 # E241 multiple spaces after
-ignore=W503,E227,E241
+# E252 missing whitespace around parameter equals
+ignore=W503,E227,E241,E252