diff --git a/README.md b/README.md
index 3549b12..37987d7 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ For currently available local checks, see: [files/check-mk/local](https://github
 
 Currently the following checkmk agent plugins are supported:
 
-```
+```yaml
 checkmkagent_plugins_available: [ 'mk_ceph', 'mk_logwatch.py', 'mk_mysql' ]
 ```
 
@@ -37,7 +37,7 @@ N/A
 Example Playbook
 ----------------
 
-```
+```yaml
     - hosts: site
       vars:
         checkmkagent_host_url: 'http://monitor01.example.com/mysite'
@@ -59,7 +59,7 @@ Older versions of this role used the variable `checkmkagent_baseurl` instead `ch
 `mk_apt` was installed in `/usr/lib/check_mk_agent/plugins/60` instead of `/usr/lib/check_mk_agent/plugins/3600`.
 To delete the check on all hosts from the wrong location you could use ansible like this:
 
-```
+```console
 % ansible -i hosts all -m shell -a "ls -l /usr/lib/check_mk_agent/plugins/60/mk_apt"
 % ansible -i hosts all -b -m shell -a "rm /usr/lib/check_mk_agent/plugins/60/mk_apt"
 % ansible -i hosts all -b -m shell -a "rmdir /usr/lib/check_mk_agent/plugins/60"
@@ -74,4 +74,4 @@ MIT
 Author Information
 ------------------
 
-Darshaka Pathirana - https://synpro.solutions
+Darshaka Pathirana - <https://synpro.solutions>
diff --git a/files/check-mk/local/check_megacli_battery b/files/check-mk/local/check_megacli_battery
index c5b1453..682050f 100644
--- a/files/check-mk/local/check_megacli_battery
+++ b/files/check-mk/local/check_megacli_battery
@@ -13,10 +13,12 @@ fi
 # battery_adapter=ALL or an adapter
 
 if [ -e "$MK_CONFDIR/megacli.cfg" ]; then
-  . $MK_CONFDIR/megacli.cfg
+  # shellcheck disable=SC1090
+  . "$MK_CONFDIR/megacli.cfg"
 fi
 
 # if unconfigured then default to all adapters
+# shellcheck disable=SC2154
 if [ -z "$battery_adapter" ] ; then
   exit 0
 fi
diff --git a/files/check-mk/local/check_megacli_diskgroups b/files/check-mk/local/check_megacli_diskgroups
index b88c11d..ac6198f 100644
--- a/files/check-mk/local/check_megacli_diskgroups
+++ b/files/check-mk/local/check_megacli_diskgroups
@@ -14,9 +14,11 @@ fi
 # num_disk_groups=0
 
 if [ -e "$MK_CONFDIR/megacli.cfg" ]; then
-  . $MK_CONFDIR/megacli.cfg
+  # shellcheck disable=SC1090
+  . "$MK_CONFDIR/megacli.cfg"
 fi
 
+# shellcheck disable=SC2154
 if [ -z "$num_disk_groups" ]; then
   exit 0
 fi
@@ -38,7 +40,7 @@ for adapter in $adapters ; do
   fi
 
   if [ "$num_disk_groups_adapter" -eq 0 ] ; then
-    [ ! -z "$output" ] && output="${output}, "
+    [ -n "$output" ] && output="${output}, "
     output="${output}Adapter $adapter: no disk group"
     continue
   else
@@ -57,7 +59,7 @@ for adapter in $adapters ; do
     echo "2 ${check_name} - $STATUS on adapter $adapter [see 'megacli -CfgDsply -a$adapter -NoLog']"
     exit 1
   else
-    [ ! -z "$output" ] && output="${output}, "
+    [ -n "$output" ] && output="${output}, "
     output="${output}Adapter $adapter: $STATUS"
   fi
 done
@@ -70,7 +72,7 @@ elif [ "$num_disk_groups_present" -gt "$num_disk_groups_expected" ] ; then
   exit 1
 fi
 
-[ ! -z "$output" ] && output="${output}, "
+[ -n "$output" ] && output="${output}, "
 output="${output}$num_disk_groups_present disk group(s) found"
 
 echo "0 ${check_name} - $output"
diff --git a/files/check-mk/local/check_megacli_num_disks b/files/check-mk/local/check_megacli_num_disks
index 7b65870..8e72b3f 100644
--- a/files/check-mk/local/check_megacli_num_disks
+++ b/files/check-mk/local/check_megacli_num_disks
@@ -14,9 +14,11 @@ fi
 # num_disks=[number of disks to be expected]
 
 if [ -e "$MK_CONFDIR/megacli.cfg" ]; then
-  . $MK_CONFDIR/megacli.cfg
+  # shellcheck disable=SC1090
+  . "$MK_CONFDIR/megacli.cfg"
 fi
 
+# shellcheck disable=SC2154
 if [ -z "$num_disks" ] ; then
   exit 0
 fi
diff --git a/molecule/default/converge.yml b/molecule/default/converge.yml
deleted file mode 100644
index 0bcfa80..0000000
--- a/molecule/default/converge.yml
+++ /dev/null
@@ -1,7 +0,0 @@
----
-- name: Converge
-  hosts: all
-  tasks:
-    - name: "Include ansible-role-checkmkagent"
-      include_role:
-        name: "ansible-role-checkmkagent"
diff --git a/molecule/default/molecule.yml b/molecule/default/molecule.yml
deleted file mode 100644
index 3bd4fbd..0000000
--- a/molecule/default/molecule.yml
+++ /dev/null
@@ -1,18 +0,0 @@
----
-dependency:
-  name: galaxy
-driver:
-  name: docker
-platforms:
-  - name: instance
-    image: geerlingguy/docker-debian10-ansible
-    pre_build_image: true
-    container_default_behavior: no_defaults
-  - name: debian_11
-    image: geerlingguy/docker-debian11-ansible
-    pre_build_image: true
-    container_default_behavior: no_defaults
-provisioner:
-  name: ansible
-verifier:
-  name: ansible
diff --git a/molecule/default/verify.yml b/molecule/default/verify.yml
deleted file mode 100644
index 79044cd..0000000
--- a/molecule/default/verify.yml
+++ /dev/null
@@ -1,10 +0,0 @@
----
-# This is an example playbook to execute Ansible tests.
-
-- name: Verify
-  hosts: all
-  gather_facts: false
-  tasks:
-  - name: Example assertion
-    assert:
-      that: true