diff --git a/specs/common/schemas/SearchResponse.yml b/specs/common/schemas/SearchResponse.yml
index 9f35e15346d..725f486a4d2 100644
--- a/specs/common/schemas/SearchResponse.yml
+++ b/specs/common/schemas/SearchResponse.yml
@@ -1,8 +1,6 @@
 baseSearchResponse:
   type: object
   additionalProperties: true
-  required:
-    - processingTimeMS
   properties:
     abTestID:
       type: integer