diff --git a/README.md b/README.md
index 20b3a99..30fd652 100644
--- a/README.md
+++ b/README.md
@@ -16,8 +16,8 @@ The variable `certbot_install_from_source` controls whether to install Certbot f
 
     certbot_auto_renew: true
     certbot_auto_renew_user: "{{ ansible_user | default(lookup('env', 'USER')) }}"
-    certbot_auto_renew_hour: 3
-    certbot_auto_renew_minute: 30
+    certbot_auto_renew_hour: "3"
+    certbot_auto_renew_minute: "30"
     certbot_auto_renew_options: "--quiet --no-self-upgrade"
 
 
@@ -92,8 +92,8 @@ None.
 
       vars:
         certbot_auto_renew_user: your_username_here
-        certbot_auto_renew_minute: 20
-        certbot_auto_renew_hour: 5
+        certbot_auto_renew_minute: "20"
+        certbot_auto_renew_hour: "5"
 
       roles:
         - geerlingguy.certbot
diff --git a/defaults/main.yml b/defaults/main.yml
index 12d31b7..5ace427 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -2,8 +2,8 @@
 # Certbot auto-renew cron job configuration (for certificate renewals).
 certbot_auto_renew: true
 certbot_auto_renew_user: "{{ ansible_user | default(lookup('env', 'USER')) }}"
-certbot_auto_renew_hour: 3
-certbot_auto_renew_minute: 30
+certbot_auto_renew_hour: "3"
+certbot_auto_renew_minute: "30"
 certbot_auto_renew_options: "--quiet --no-self-upgrade"
 
 # Use a systemd timer instead of a cron job to renew certificates
diff --git a/molecule/default/tests/test_default.py b/molecule/default/tests/test_default.py
deleted file mode 100644
index eedd64a..0000000
--- a/molecule/default/tests/test_default.py
+++ /dev/null
@@ -1,14 +0,0 @@
-import os
-
-import testinfra.utils.ansible_runner
-
-testinfra_hosts = testinfra.utils.ansible_runner.AnsibleRunner(
-    os.environ['MOLECULE_INVENTORY_FILE']).get_hosts('all')
-
-
-def test_hosts_file(host):
-    f = host.file('/etc/hosts')
-
-    assert f.exists
-    assert f.user == 'root'
-    assert f.group == 'root'