diff --git a/roles/nameserver/tasks/install_bind.yml b/roles/nameserver/tasks/install_bind.yml
index 501130a..1cf5367 100644
--- a/roles/nameserver/tasks/install_bind.yml
+++ b/roles/nameserver/tasks/install_bind.yml
@@ -6,13 +6,13 @@
 - name: nameserver | bind | basic configuration
   replace:
     path: "{{ named_conf_options }}"
-    regexp: 
+    regexp: "{{ item.regexp }}"
     replace: "{{ item.option }}"
     validate: "{{ named_checkconf }} {{ named_conf_options }}"
   loop:
-    - { regexp: '^\s*listen-on \{(?:[\s\n]*(?:\d{1,3}\.){3}\d{1,3};)*[\s\n]*\};', option: "  listen-on { {{ ansible_default_ipv4.address }}; };"}
-    - { regexp: '^\s*listen-on-v6 \{(?:\s\n]*(?:any;[\s\n]*\};', option: "  listen-on-v6 { {{ ansible_default_ipv6.address }}; };"}
-    - { regexp: '^\s*listen-on-v6 \{(?:[\s\n]*(?:[\da-f:]*;)*[\s\n]*\};', option: "  listen-on-v6 { {{ ansible_default_ipv6.address }}; };"}
+    - { regexp: '^\s*listen-on \{(?:[\s\n]*(?:\d{1,3}\.){3}\d{1,3};)*[\s\n]*\};', option: "\tlisten-on { {{ ansible_default_ipv4.address }}; };"}
+    - { regexp: '^\s*listen-on-v6 \{(?:\s\n]*(?:any;[\s\n]*\};', option: "\tlisten-on-v6 { {{ ansible_default_ipv6.address }}; };"}
+    - { regexp: '^\s*listen-on-v6 \{(?:[\s\n]*(?:[\da-f:]*;)*[\s\n]*\};', option: "\tlisten-on-v6 { {{ ansible_default_ipv6.address }}; };"}
 
 - name: nameserver | bind | basic configuration cont'd
   lineinfile: