diff --git a/run_tests.sh b/run_tests.sh
index 12ed568e1..264d3c04d 100755
--- a/run_tests.sh
+++ b/run_tests.sh
@@ -135,7 +135,7 @@ function run_pep8 {
   # NOTE(heckj): E125, E126 are being ignored matching other openstack projects
   # for pep 1.3.3 due to relatively arbitrary line indentation rulings
   ${wrapper} pep8 --repeat --show-pep8 --show-source \
-    --ignore=E125,E126 --exclude=.venv,.tox,dist,doc \
+    --ignore=E125,E126 --exclude=.venv,.tox,dist,doc,build \
     ${srcfiles}
 }
 
diff --git a/tox.ini b/tox.ini
index 6ef1beb12..5fac7abad 100644
--- a/tox.ini
+++ b/tox.ini
@@ -41,4 +41,4 @@ downloadcache = ~/cache/pip
 # H802: git commit title
 ignore = F811,F821,F841,H201,H202,H302,H304,H306,H402,H403,H404,H802
 show-source = True
-exclude = .venv,.tox,dist,doc,*egg
+exclude = .venv,.tox,dist,doc,*egg,build