diff --git a/group_vars/connect/plain.yml b/group_vars/connect/plain.yml
index cb6667b..d1745ff 100644
--- a/group_vars/connect/plain.yml
+++ b/group_vars/connect/plain.yml
@@ -16,7 +16,7 @@ connect_elastic_host: "{{ shared_service_elastic_stack_01_hostname }}"
 connect_elastic_username: "{{ elastic_admin_username }}"
 connect_elastic_password: "{{ elastic_admin_password }}"
 connect_elastic_ca: "file:/usr/share/smardigo/ca.crt"
-connect_elastic_prefix: "{{ stage }}-{{ tenant_id }}-{{ cluster_name }}"
+connect_elastic_prefix: "{{ stage }}_{{ tenant_id }}_{{ cluster_name }}"
 
 connect_iam_module: "external"
 smardigo_iam_client_enabled: "true"