diff --git a/group_vars/osds.yml.sample b/group_vars/osds.yml.sample
index a00918811..8e79c3bc8 100644
--- a/group_vars/osds.yml.sample
+++ b/group_vars/osds.yml.sample
@@ -225,6 +225,7 @@ dummy:
 #   - data: /dev/sdb1
 
 #lvm_volumes: []
+#crush_device_class: ""
 
 
 ##########