diff --git a/roles/postgres/tasks/main.yml b/roles/postgres/tasks/main.yml
index a653564..fce9d7c 100644
--- a/roles/postgres/tasks/main.yml
+++ b/roles/postgres/tasks/main.yml
@@ -18,13 +18,14 @@
     pg_version: "{{ pg_version_dirs.files | map(attribute='path') | map('basename') | sort | last }}"
 
 - name: Detect cluster name
-  command: "pg_lsclusters --no-header | awk '{print $2}' | head -n1"
+  shell: "pg_lsclusters --no-header | awk '{print $2}' | head -n1"
   register: pg_cluster_name
   changed_when: false
 
 - set_fact:
     pg_cluster: "{{ pg_cluster_name.stdout }}"
 
+
 - name: Define PostgreSQL cluster path
   set_fact:
     pg_cluster_path: "/etc/postgresql/{{ pg_version }}/{{ pg_cluster }}"