diff --git a/tox.ini b/tox.ini
index 4601cee7fb..be846fd20e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -120,7 +120,7 @@ max-complexity=18
 # [H203] Use assertIs(Not)None to check for None.
 # [H204] Use assert(Not)Equal to check for equality.
 # [H205] Use assert(Greater|Less)(Equal) for comparison.
-# [H210] Require ‘autospec’, ‘spec’, or ‘spec_set’ in mock.patch/mock.patch.object calls
+# [H210] Require 'autospec', 'spec', or 'spec_set' in mock.patch/mock.patch.object calls
 # [H904] Delay string interpolations at logging calls.
 enable-extensions=H106,H203,H204,H205,H210,H904
 # TODO(rpittau) remove the ignores below when we're ready to apply H210 to