diff --git a/roles/knot/defaults/main.yaml b/roles/knot/defaults/main.yaml
index 199320a0..572abe28 100644
--- a/roles/knot/defaults/main.yaml
+++ b/roles/knot/defaults/main.yaml
@@ -1,11 +1,11 @@
 ---
 knot__deploy_prometheus_exporter: true
 knot__log_level: info
-knot__remotes: []
-knot__keys: []
-knot__catalog_zones: []
-knot__primary_zones: []
-knot__catalog_secondary_zones: []
-knot__secondary_zones: []
-knot__dynamic_zones: []
-knot__acls: []
+knot__remotes: [ ]
+knot__keys: [ ]
+knot__catalog_zones: [ ]
+knot__primary_zones: [ ]
+knot__catalog_secondary_zones: [ ]
+knot__secondary_zones: [ ]
+knot__dynamic_zones: [ ]
+knot__acls: [ ]
diff --git a/roles/knot/meta/argument_specs.yaml b/roles/knot/meta/argument_specs.yaml
index 8ac6ae02..61a529b1 100644
--- a/roles/knot/meta/argument_specs.yaml
+++ b/roles/knot/meta/argument_specs.yaml
@@ -88,7 +88,7 @@ argument_specs:
             type: list
             elements: str
             required: true
-          
+
       knot__secondary_zones:
         description: A list of secondary zones that will be served by knot
         required: false
@@ -168,4 +168,4 @@ argument_specs:
           update_type:
             type: list
             elements: str
-            required: false        
+            required: false
diff --git a/roles/knot/tasks/02-configure.yaml b/roles/knot/tasks/02-configure.yaml
index e7ff638c..fe4be107 100644
--- a/roles/knot/tasks/02-configure.yaml
+++ b/roles/knot/tasks/02-configure.yaml
@@ -34,4 +34,3 @@
     group: knot
     mode: u=rw,g=r
     validate: "kzonecheck -v -o '{{ item.domain }}' %s"
-