diff --git a/schema.graphql b/schema.graphql
index 1f89ecdc..3b0cdb89 100644
--- a/schema.graphql
+++ b/schema.graphql
@@ -482,7 +482,7 @@ type TopicStat {
   shouts: Int!
   followers: Int!
   authors: Int!
-  viewed: Int!
+  viewed: Int
   reacted: Int!
   commented: Int
   rating: Int