diff --git a/roles/web_server/molecule/default/prepare.yml b/roles/web_server/molecule/default/prepare.yml
index 21e3c3a55967f9d91f35b6ee3033ace8cb0d69d3..4e4b727b882399cd82335e66f3f884a9d0bc03e8 100644
--- a/roles/web_server/molecule/default/prepare.yml
+++ b/roles/web_server/molecule/default/prepare.yml
@@ -76,7 +76,7 @@
           CipherString = DEFAULT@SECLEVEL=0
         owner: root
         group: root
-        mode: 0644
+        mode: "0644"
         state: present
 
 - name: Prepare, test fixtures
@@ -91,7 +91,7 @@
         line: "{{ item.key }} {{ item.value }}"
         owner: root
         group: root
-        mode: 0644
+        mode: "0644"
         state: present
       with_dict:
         192.168.56.11: "client"
@@ -124,7 +124,7 @@
         dest: /usr/local/share/ca-certificates/testca.crt
         owner: root
         group: root
-        mode: 0644
+        mode: "0644"
       notify:
         - Update CA certificate cache