diff --git a/openapi.yml b/openapi.yml
index f49191f..b187b64 100644
--- a/openapi.yml
+++ b/openapi.yml
@@ -219,7 +219,7 @@ paths:
           description: Return Workflow
           content:
             application/json: {schema: {$ref: '#/components/schemas/Workflow'}}
-            application/vnd.ocrd+zip: {}
+            'text/vnd.ocrd.workflow': {}
         '404':
           description: 'Workflow not available'
     post: