diff --git a/software/tox.ini b/software/tox.ini
index 9f9a6e73..15e67227 100644
--- a/software/tox.ini
+++ b/software/tox.ini
@@ -58,8 +58,7 @@ commands =
 [flake8]
 # H106: Don't put vim configuration in source files (off by default).
 # H203: Use assertIs(Not)None to check for None (off by default).
-# H904 Delay string interpolations at logging calls (off by default)
-enable-extensions = H106 H203,H904
+enable-extensions = H106,H203
 exclude = .venv,.git,.tox,dist,doc,*lib/python*,*egg,build,release-tag-*
 max-line-length = 80
 show-source = True