diff --git a/ansible/roles/ironic-enrolment/tasks/main.yml b/ansible/roles/ironic-enrolment/tasks/main.yml
index eecce70..581ead1 100644
--- a/ansible/roles/ironic-enrolment/tasks/main.yml
+++ b/ansible/roles/ironic-enrolment/tasks/main.yml
@@ -61,7 +61,12 @@
     baremetal node list
   register: api_version_result
   changed_when: false
-  failed_when: false
+  failed_when:
+    - api_version_result.rc != 0
+    # 'invalid choice' if the client doesn't support 1.34.
+    - "'invalid choice' not in api_version_result.stderr"
+    # 'not supported' if the server doesn't support 1.34.
+    - "'not supported' not in api_version_result.stderr"
 
 # This is used in port.yml.
 - name: Set a fact about whether Ironic supports physical network awareness