diff --git a/datastore/threads/threadproxyds.nim b/datastore/threads/threadproxyds.nim
index ed2b2de..db2c6f1 100644
--- a/datastore/threads/threadproxyds.nim
+++ b/datastore/threads/threadproxyds.nim
@@ -263,6 +263,7 @@ method query*(
 
   var
     lock = newAsyncLock() # serialize querying under threads
+    iter = QueryIter.new()
 
   proc next(): Future[?!QueryResponse] {.async.} =
     defer: