diff --git a/config/schema/integration.schema.yml b/config/schema/integration.schema.yml
index 190c89a..2bdb03d 100644
--- a/config/schema/integration.schema.yml
+++ b/config/schema/integration.schema.yml
@@ -18,21 +18,8 @@ simple_integrations.integration.*:
       type: string
       label: 'External end point'
     auth_type:
-      type: mapping
-      label: 'Authentication type'
-      mapping:
-        none:
-          type: string
-          label: 'None'
-        headers:
-          type: string
-          label: 'Headers'
-        basic_auth:
-          type: string
-          label: 'Basic auth'
-        certificate:
-          type: string
-          label: 'Certificate'
+      type: string
+      label: 'The authentication type.'
     auth_user:
       type: string
       label: 'Username'