diff --git a/ironic_tempest_plugin/tests/scenario/test_baremetal_basic_ops.py b/ironic_tempest_plugin/tests/scenario/test_baremetal_basic_ops.py
index dcfc023..0d15fd4 100644
--- a/ironic_tempest_plugin/tests/scenario/test_baremetal_basic_ops.py
+++ b/ironic_tempest_plugin/tests/scenario/test_baremetal_basic_ops.py
@@ -177,6 +177,9 @@
             # CUSTOM_ prefix. Normalise it.
             node_resource_class = node['resource_class']
             node_resource_class = node_resource_class.upper()
+            node_resource_class = node_resource_class.translate(
+                str.maketrans(" -.:", "____", "!@#$%^&*()+=/\\?<>|\"'")
+            )
             node_resource_class = 'CUSTOM_' + node_resource_class
             self.assertEqual(resource_class, node_resource_class)