diff --git a/app/models/manageiq/providers/ansible_tower/shared/inventory/parser/automation_manager.rb b/app/models/manageiq/providers/ansible_tower/shared/inventory/parser/automation_manager.rb
index 30810433..d43fe1a2 100644
--- a/app/models/manageiq/providers/ansible_tower/shared/inventory/parser/automation_manager.rb
+++ b/app/models/manageiq/providers/ansible_tower/shared/inventory/parser/automation_manager.rb
@@ -122,7 +122,7 @@ def credentials
     collector.credentials.each do |credential|
       inventory_object = persister.credentials.find_or_build(credential.id.to_s)
       inventory_object.name = credential.name
-      inventory_object.userid = credential.username
+      inventory_object.userid = credential.try(:username)
       inventory_object.type = miq_credential_types[credential.kind] || "#{provider_module}::AutomationManager::Credential"
       if credential.kind == 'ssh' && !credential.vault_password.empty?
         inventory_object.type = "#{provider_module}::AutomationManager::VaultCredential"