diff --git a/prover/prover.go b/prover/prover.go
index cce641067..915adba0a 100644
--- a/prover/prover.go
+++ b/prover/prover.go
@@ -132,6 +132,10 @@ func InitFromConfig(ctx context.Context, p *Prover, cfg *Config) (err error) {
 	}
 
 	p.proverAddress = crypto.PubkeyToAddress(p.cfg.L1ProverPrivKey.PublicKey)
+
+	chBufferSize := p.protocolConfigs.BlockMaxProposals
+	p.proofGenerationCh = make(chan *proofProducer.ProofWithHeader, chBufferSize)
+	p.proofWindowExpiredCh = make(chan *bindings.TaikoL1ClientBlockProposed, chBufferSize)
 	p.proveNotify = make(chan struct{}, 1)
 
 	if err := p.initL1Current(cfg.StartingBlockID); err != nil {
@@ -439,7 +443,6 @@ func (p *Prover) eventLoop() {
 	blockVerifiedSub := rpc.SubscribeBlockVerified(p.rpc.TaikoL1, blockVerifiedCh)
 	transitionProvedSub := rpc.SubscribeTransitionProved(p.rpc.TaikoL1, transitionProvedCh)
 	transitionContestedSub := rpc.SubscribeTransitionContested(p.rpc.TaikoL1, transitionContestedCh)
-
 	defer func() {
 		blockProposedSub.Unsubscribe()
 		blockVerifiedSub.Unsubscribe()
diff --git a/prover/prover_test.go b/prover/prover_test.go
index 9e5c8e419..7ddd89bd7 100644
--- a/prover/prover_test.go
+++ b/prover/prover_test.go
@@ -385,11 +385,6 @@ func (s *ProverTestSuite) TestProveOp() {
 	s.Equal(header.ParentHash, common.BytesToHash(event.Tran.ParentHash[:]))
 }
 
-func (s *ProverTestSuite) TestStartSubscription() {
-	s.NotPanics(s.p.initSubscription)
-	s.NotPanics(s.p.closeSubscription)
-}
-
 func (s *ProverTestSuite) TestSetApprovalAmount() {
 	opts, err := bind.NewKeyedTransactorWithChainID(s.p.proverPrivateKey, s.p.rpc.L1ChainID)
 	s.Nil(err)