diff --git a/awx/ui/src/screens/Instances/InstanceAdd/InstanceAdd.test.js b/awx/ui/src/screens/Instances/InstanceAdd/InstanceAdd.test.js
index 1c4d8d1d1c..ac667c37ad 100644
--- a/awx/ui/src/screens/Instances/InstanceAdd/InstanceAdd.test.js
+++ b/awx/ui/src/screens/Instances/InstanceAdd/InstanceAdd.test.js
@@ -36,6 +36,7 @@ describe('<InstanceAdd />', () => {
       });
     });
     expect(InstancesAPI.create).toHaveBeenCalledWith({
+      listener_port: null, // injected if listener_port is not set
       node_type: 'hop',
     });
     expect(history.location.pathname).toBe('/instances/13/details');
diff --git a/awx/ui/src/screens/Instances/InstanceDetail/InstanceDetail.js b/awx/ui/src/screens/Instances/InstanceDetail/InstanceDetail.js
index c675fb7b44..e1882d3a75 100644
--- a/awx/ui/src/screens/Instances/InstanceDetail/InstanceDetail.js
+++ b/awx/ui/src/screens/Instances/InstanceDetail/InstanceDetail.js
@@ -369,7 +369,7 @@ function InstanceDetail({ setBreadcrumb, isK8s }) {
                 isDisabled={
                   !config?.me?.is_superuser ||
                   instance.health_check_pending ||
-                  !instance.managed
+                  instance.managed
                 }
                 variant="primary"
                 ouiaId="health-check-button"
diff --git a/awx/ui/src/screens/Instances/InstanceDetail/InstanceDetail.test.js b/awx/ui/src/screens/Instances/InstanceDetail/InstanceDetail.test.js
index baa1ab3e54..888a67c0e2 100644
--- a/awx/ui/src/screens/Instances/InstanceDetail/InstanceDetail.test.js
+++ b/awx/ui/src/screens/Instances/InstanceDetail/InstanceDetail.test.js
@@ -48,6 +48,7 @@ describe('<InstanceDetail/>', () => {
         cpu_capacity: 32,
         mem_capacity: 38,
         enabled: true,
+        managed: false,
         managed_by_policy: true,
         node_type: 'execution',
         node_state: 'ready',