diff --git a/eth/backend.go b/eth/backend.go
index e5db360f039f..26bec25f063d 100644
--- a/eth/backend.go
+++ b/eth/backend.go
@@ -228,7 +228,7 @@ func New(stack *node.Node, config *ethconfig.Config, l1Client sync_service.EthCl
 	if config.CheckCircuitCapacity {
 		eth.asyncChecker = ccc.NewAsyncChecker(eth.blockchain, config.CCCMaxWorkers, false)
 		eth.asyncChecker.WithOnFailingBlock(func(b *types.Block, err error) {
-			log.Warn("block failed CCC check, it will be reorged by the sequencer", "hash", b.Hash(), "err", err)
+			log.Warn("block failed CCC check, it will be reorged by the sequencer", "hash", b.Hash().Hex(), "err", err)
 		})
 		eth.blockchain.Validator().WithAsyncValidator(eth.asyncChecker.Check)
 	}
diff --git a/rollup/pipeline/pipeline.go b/rollup/pipeline/pipeline.go
index aaf364fb46da..1cdf9f89abc5 100644
--- a/rollup/pipeline/pipeline.go
+++ b/rollup/pipeline/pipeline.go
@@ -474,6 +474,7 @@ func (p *Pipeline) cccStage(candidates <-chan *BlockCandidate, deadline time.Tim
 					lastTxn := candidate.Txs[candidate.Txs.Len()-1]
 					cccTimer.UpdateSince(cccStart)
 					if err != nil {
+						log.Info("failed to apply CCC", "txHash", lastTxn.Hash().Hex(), "err", err)
 						resultCh <- &Result{
 							OverflowingTx:    lastTxn,
 							OverflowingTrace: candidate.LastTrace,