diff --git a/playbooks/mailu_switch_to_second.yaml b/playbooks/mailu_switch_to_second.yaml
index a5b2537..9ea35f9 100644
--- a/playbooks/mailu_switch_to_second.yaml
+++ b/playbooks/mailu_switch_to_second.yaml
@@ -44,7 +44,7 @@
         msg: "var is {{ NEW_IP }}"
       when: inventory_hostname in groups['router']
     - set_fact:
-        app_path2: "{{ ruleset.stdout }}"
+        app_path2: "{{ ruleset.stdout|string }}"
       when: inventory_hostname in groups['router']
     - set_fact:
         app_path: "{{ app_path2 | regex_replace('(\\<MAIL_SERVER\\>[0-9,]{1,}\\>)([0-9.]{1,})(\\>[0-9a-zA-Z\\s-]{0,}\\>TCP\\>)', '\\1{{ NEW_IP }}\\3') | regex_replace('(\\<WEB_SERVER\\>[0-9,]{1,}\\>)([0-9.]{1,})(\\>[0-9a-zA-Z\\s-]{0,}\\>TCP\\>)', '\\1{{ NEW_IP }}\\3') }}"