diff --git a/seb4itik/byow/roles/local_ca_certs/defaults/main.yml b/seb4itik/byow/roles/local_ca_certs/defaults/main.yml
index 9fbc5d7..30a8d6a 100644
--- a/seb4itik/byow/roles/local_ca_certs/defaults/main.yml
+++ b/seb4itik/byow/roles/local_ca_certs/defaults/main.yml
@@ -8,7 +8,7 @@ local_ca_certs_default_not_before: "-1d"   # valid since yesterday
 
 # Required
 local_ca_certs_ca_passphrase: null
-local_ca_certs_list: {}
+local_ca_certs_list: []
 # - cn: <string>
 #   domains: <array of strings>
 #   country_name: <string>