diff --git a/public/openapi/write/posts/pid/diffs/timestamp.yaml b/public/openapi/write/posts/pid/diffs/timestamp.yaml
index 02d4219d9c..15d942fc26 100644
--- a/public/openapi/write/posts/pid/diffs/timestamp.yaml
+++ b/public/openapi/write/posts/pid/diffs/timestamp.yaml
@@ -19,9 +19,7 @@ delete:
       description: a valid UNIX timestamp
       example: 1611850000000
   responses:
-    "200":
+    '200':
       description: Post diff successfully deleted
       content:
-        application/json:
-          schema:
-            $ref: ../diffs.yaml#/get/responses/200/content
+        $ref: ../diffs.yaml#/get/responses/200/content
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