diff --git a/doc/source/conf.py b/doc/source/conf.py
index 23f732e..201d387 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -36,7 +36,8 @@
     subprocess.call(['tools/generate-tempest-plugins-list.sh'], cwd=root_dir)
 
 def setup(app):
-    app.connect('builder-inited', build_plugin_registry)
+    if os.getenv('GENERATE_TEMPEST_PLUGIN_LIST', 'true').lower() == 'true':
+        app.connect('builder-inited', build_plugin_registry)
 
 
 
diff --git a/tox.ini b/tox.ini
index 2120818..6f37d00 100644
--- a/tox.ini
+++ b/tox.ini
@@ -20,7 +20,7 @@
     PYTHONWARNINGS=default::DeprecationWarning
     BRANCH_NAME=master
     CLIENT_NAME=tempest
-passenv = OS_STDOUT_CAPTURE OS_STDERR_CAPTURE OS_TEST_TIMEOUT OS_TEST_LOCK_PATH OS_TEST_PATH TEMPEST_CONFIG TEMPEST_CONFIG_DIR http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY ZUUL_CACHE_DIR REQUIREMENTS_PIP_LOCATION
+passenv = OS_STDOUT_CAPTURE OS_STDERR_CAPTURE OS_TEST_TIMEOUT OS_TEST_LOCK_PATH OS_TEST_PATH TEMPEST_CONFIG TEMPEST_CONFIG_DIR http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY ZUUL_CACHE_DIR REQUIREMENTS_PIP_LOCATION GENERATE_TEMPEST_PLUGIN_LIST
 usedevelop = True
 install_command =
     {toxinidir}/tools/tox_install.sh {env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}