diff --git a/group_vars/metricspi/blackbox.yml b/group_vars/metricspi/blackbox.yml
index be67e6d..7da1480 100644
--- a/group_vars/metricspi/blackbox.yml
+++ b/group_vars/metricspi/blackbox.yml
@@ -32,7 +32,7 @@ blackbox_modules:
       query_type: SOA
       validate_answer_rrs:
         fail_if_not_matches_regexp:
-        - 'pyrocufflink\.blue\.\t\d+\tIN\tSOA\tdc\d+\.pyrocufflink\.blue.*'
+        - 'pyrocufflink\.blue\.\t\d+\tIN\tSOA\tdc.+\.pyrocufflink\.blue.*'
 
   smtp:
     prober: tcp