diff --git a/beacon-chain/blockchain/process_block_helpers.go b/beacon-chain/blockchain/process_block_helpers.go
index 5dcb6a808a0..3ae089c2a4b 100644
--- a/beacon-chain/blockchain/process_block_helpers.go
+++ b/beacon-chain/blockchain/process_block_helpers.go
@@ -53,7 +53,7 @@ func (s *Service) getFCUArgsEarlyBlock(cfg *postBlockProcessConfig, fcuArgs *fcu
 		fcuArgs.headState = cfg.postState
 		fcuArgs.headBlock = cfg.roblock
 		fcuArgs.headRoot = cfg.headRoot
-		fcuArgs.proposingSlot = s.CurrentSlot() * 1
+		fcuArgs.proposingSlot = s.CurrentSlot() + 1
 		return nil
 	}
 	return s.fcuArgsNonCanonicalBlock(cfg, fcuArgs)
@@ -89,7 +89,7 @@ func (s *Service) fcuArgsNonCanonicalBlock(cfg *postBlockProcessConfig, fcuArgs
 	fcuArgs.headState = headState
 	fcuArgs.headBlock = headBlock
 	fcuArgs.headRoot = cfg.headRoot
-	fcuArgs.proposingSlot = s.CurrentSlot() * 1
+	fcuArgs.proposingSlot = s.CurrentSlot() + 1
 	return nil
 }