diff --git a/ci-support.sh b/ci-support.sh
index 85a5c68793191feee38eb1ecf13441a8ba442deb..78e9adbce8d55c509d3e0a492d7fc917753c6ba4 100644
--- a/ci-support.sh
+++ b/ci-support.sh
@@ -617,8 +617,7 @@ install_and_run_flake8()
   fi
 
   ${PY_EXE} -m pip install "${FLAKE8_PACKAGES[@]}"
-  # See https://github.com/inducer/pytools/pull/171 for discussion on B028
-  ${PY_EXE} -m flake8 "$@" --extend-ignore B028
+  ${PY_EXE} -m flake8 "$@"
 }
 
 # }}}