diff --git a/rest-api-spec/api/clear_scroll.json b/rest-api-spec/api/clear_scroll.json
index 144cc054bc9..f6c42d40d22 100644
--- a/rest-api-spec/api/clear_scroll.json
+++ b/rest-api-spec/api/clear_scroll.json
@@ -8,7 +8,6 @@
       "parts": {
         "scroll_id": {
           "type" : "list",
-          "required" : "true",
           "description" : "A comma-separated list of scroll IDs to clear"
         }
       },