# Deleting classifier blocks

Use this procedure to delete classifier blocks.

## Procedure steps

1. From the navigation tree, double-click QoS.

2. From the QoS tree, double-click QoS Rules.

3. Select the Classifier Block tab.

4. Highlight the classifier block to delete.

5. Click Delete.

   Note

   You cannot delete the last classifier element in a classifier block if a policy references it. First delete the policy. Additionally, you cannot delete a classifier block if it is either the storage type other or readOnly.