diff --git a/tools/kolla-ansible b/tools/kolla-ansible
index 5af0df5d2f..28194430d8 100755
--- a/tools/kolla-ansible
+++ b/tools/kolla-ansible
@@ -81,8 +81,8 @@ CONFIG_DIR="/etc/kolla"
 PASSWORDS_FILE="${CONFIG_DIR}/passwords.yml"
 DANGER_CONFIRM=
 INCLUDE_IMAGES=
-# Serial is not recommended and disable in default. User could enable it by
-# simple configure ANSIBLE_SERIAL variable
+# Serial is not recommended and disabled by default. User could enable it by
+# simply configuring ANSIBLE_SERIAL variable.
 ANSIBLE_SERIAL=${ANSIBLE_SERIAL:-0}
 
 while [ "$#" -gt 0 ]; do