diff --git a/validator_client/validator_services/src/sync.rs b/validator_client/validator_services/src/sync.rs
index cdda9a6690..a6e9f4549a 100644
--- a/validator_client/validator_services/src/sync.rs
+++ b/validator_client/validator_services/src/sync.rs
@@ -596,7 +596,7 @@ pub async fn fill_in_aggregation_proofs<S: ValidatorStore, T: SlotClock + 'stati
     pre_compute_slot: Slot,
 ) {
     // Generate selection proofs for each validator at each slot, one slot at a time.
-    for slot in (current_slot.as_u64()..=pre_compute_slot.as_u64()).map(Slot::new) {
+    for slot in ((current_slot.as_u64() + 1)..=(pre_compute_slot.as_u64() + 1)).map(Slot::new) {
         // For distributed mode
         if duties_service
             .sync_duties