diff --git a/.github/workflows/acceptance.yml b/.github/workflows/acceptance.yml
index a58da6f..9e5d76f 100644
--- a/.github/workflows/acceptance.yml
+++ b/.github/workflows/acceptance.yml
@@ -30,7 +30,6 @@ permissions:
 
 env:
   CLOUDSTACK_API_URL: http://localhost:8080/client/api
-  #CLOUDSTACK_VERSIONS: "['4.18.2.5', '4.19.1.3', '4.20.0.0']"
   CLOUDSTACK_VERSIONS: "['1.7.0']"
 jobs:
   prepare-matrix:
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 5b4cd70..4579ca8 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,7 +1,8 @@
 ---
 name: CI
 
-"on":
+on:
+  pull_request:
   push:
     branches:
       - '**'
diff --git a/tests.py b/tests.py
index eb93b98..aed8f85 100644
--- a/tests.py
+++ b/tests.py
@@ -5,7 +5,7 @@
 from functools import partial
 from unittest import TestCase
 from unittest.mock import patch
-from urllib.parse import urlparse, parse_qs
+from urllib.parse import parse_qs, urlparse
 
 from cs import (
     CloudStack,