diff --git a/run_tests.sh b/run_tests.sh
index 19f3f0f4ac..7916b4d39c 100755
--- a/run_tests.sh
+++ b/run_tests.sh
@@ -27,8 +27,9 @@ function usage {
   echo "  -x, --stop               Stop running tests after the first error or failure."
   echo "  -f, --force              Force a clean re-build of the virtual environment. Useful when dependencies have been added."
   echo "  -u, --update             Update the virtual environment with any newer package versions"
-  echo "  -p, --pep8               Just run pep8"
-  echo "  -P, --no-pep8            Don't run pep8"
+  echo "  -p, --pep8               Just run flake8"
+  echo "  -8, --8                  Just run flake8, don't show PEP8 text for each error"
+  echo "  -P, --no-pep8            Don't run flake8"
   echo "  -c, --coverage           Generate coverage report"
   echo "  -h, --help               Print this usage message"
   echo "  -xintegration            Ignore all keystoneclient test cases (integration tests)"