diff --git a/src/schema.gql b/src/schema.gql
index 61ba160..03d4681 100644
--- a/src/schema.gql
+++ b/src/schema.gql
@@ -627,7 +627,7 @@ type UserPlayTimeGQL {
 input VideoFilterInput {
   isStreamCompleted: Boolean = null
   requireCursorCompletion: Boolean! = true
-  createdAt: DateRangeFilter
+  createdAt: DateRangeFilter = null
 }
 
 type VideoHistoryGQL {