diff --git a/beacon_chain/validator_client/duties_service.nim b/beacon_chain/validator_client/duties_service.nim
index da6cb87e0..6921a64a1 100644
--- a/beacon_chain/validator_client/duties_service.nim
+++ b/beacon_chain/validator_client/duties_service.nim
@@ -86,6 +86,9 @@ proc pollForAttesterDuties*(vc: ValidatorClientRef,
         res.add(index)
       res
 
+  if validatorIndices.len == 0:
+    return 0
+
   var duties: seq[RestAttesterDuty]
   var currentRoot: Option[Eth2Digest]