diff --git a/tasks/preparing.yml b/tasks/preparing.yml
index 678397c..8f5147a 100644
--- a/tasks/preparing.yml
+++ b/tasks/preparing.yml
@@ -11,7 +11,7 @@
   ansible.builtin.file:
     path: /etc/resolv.conf
     state: absent
-  when: ''/run/systemd/resolve' in ansible_facts.lsb.description | default('')'
+  when: "'/run/systemd/resolve' in ansible_facts.lsb.description | default('')"
 
 - name: Create static /etc/resolv.conf
   ansible.builtin.copy:
@@ -88,7 +88,7 @@
 
 - name: Collect existing directories
   ansible.builtin.set_fact:
-    valid_dirs: '{{ existing_dirs.results | selectattr('matched', '>', 0) | map(attribute='files') | sum(start=[]) | map(attribute='path') | list }}'
+    valid_dirs: "{{ existing_dirs.results | selectattr('matched', '>', 0) | map(attribute='files') | sum(start=[]) | map(attribute='path') | list }}"
 
 - name: Find *.tdb and *.ldb files
   ansible.builtin.find:
@@ -103,10 +103,10 @@
   ansible.builtin.file:
     path: '{{ item.path }}'
     state: absent
-  loop: '{{ db_files.results | map(attribute='files') | sum(start=[]) }}'
+  loop: "{{ db_files.results | map(attribute='files') | sum(start=[]) }}"
   when: item.path is defined
 
 - name: Report removed files
   ansible.builtin.debug:
     msg: 'Removed: {{ item.path }}'
-  loop: '{{ db_files.results | map(attribute='files') | sum(start=[]) }}'
\ No newline at end of file
+  loop: "{{ db_files.results | map(attribute='files') | sum(start=[]) }}"
\ No newline at end of file