diff --git a/odroid.yaml b/odroid.yaml
index c0dcdea..1c0e8c5 100644
--- a/odroid.yaml
+++ b/odroid.yaml
@@ -158,6 +158,6 @@
 
     - name: Backup container volumes
       debug: var=item
-      loop: "{{ volumes }}"
+      loop: "{{ volumes | list }}"
       loop_control:
         label: "{{ item.key }}"