diff --git a/clean.yml b/clean.yml
index b166e97..96aa1f2 100644
--- a/clean.yml
+++ b/clean.yml
@@ -1,7 +1,12 @@
 ---
 - name: Prune docker
   hosts: all
+
+  vars:
+    prune_def: "Total reclaimed space: 0B"
+
   tasks:
     - name: Docker prune all
-      ansible.builtin.shell:
-        cmd: docker system prune -af
+      command: docker system prune -af
+      register: docker_prune
+      changed_when: docker_prune.stdout != prune_def