diff --git a/prover/config.go b/prover/config.go
index 5afcd6878..4699e1cf7 100644
--- a/prover/config.go
+++ b/prover/config.go
@@ -27,7 +27,6 @@ type Config struct {
 	StartingBlockID                   *big.Int
 	MaxConcurrentProvingJobs          uint
 	Dummy                             bool
-	GuardianProver                    bool
 	GuardianProverAddress             common.Address
 	GuardianProverPrivateKey          *ecdsa.PrivateKey
 	GuardianProofSubmissionDelay      time.Duration
@@ -116,7 +115,6 @@ func NewConfigFromCliContext(c *cli.Context) (*Config, error) {
 		StartingBlockID:                   startingBlockID,
 		MaxConcurrentProvingJobs:          c.Uint(flags.MaxConcurrentProvingJobs.Name),
 		Dummy:                             c.Bool(flags.Dummy.Name),
-		GuardianProver:                    c.IsSet(flags.GuardianProver.Name),
 		GuardianProverAddress:             common.HexToAddress(c.String(flags.GuardianProver.Name)),
 		GuardianProverPrivateKey:          guardianProverPrivKey,
 		GuardianProofSubmissionDelay:      c.Duration(flags.GuardianProofSubmissionDelay.Name),
diff --git a/prover/config_test.go b/prover/config_test.go
index ebf2afb99..274a4098d 100644
--- a/prover/config_test.go
+++ b/prover/config_test.go
@@ -38,7 +38,6 @@ func (s *ProverTestSuite) TestNewConfigFromCliContextGuardianProver() {
 			crypto.PubkeyToAddress(c.L1ProverPrivKey.PublicKey),
 		)
 		s.True(c.Dummy)
-		s.True(c.GuardianProver)
 		s.Equal(
 			crypto.PubkeyToAddress(s.p.cfg.GuardianProverPrivateKey.PublicKey),
 			crypto.PubkeyToAddress(c.GuardianProverPrivateKey.PublicKey),
diff --git a/prover/prover.go b/prover/prover.go
index b8e7d2be6..dbde8dc6f 100644
--- a/prover/prover.go
+++ b/prover/prover.go
@@ -229,9 +229,9 @@ func InitFromConfig(ctx context.Context, p *Prover, cfg *Config) (err error) {
 		TaikoL1Address:           p.cfg.TaikoL1Address,
 		Rpc:                      p.rpc,
 		LivenessBond:             protocolConfigs.LivenessBond,
-		IsGuardian:               p.cfg.GuardianProver,
+		IsGuardian:               p.IsGuardianProver(),
 	}
-	if p.cfg.GuardianProver {
+	if p.IsGuardianProver() {
 		proverServerOpts.ProverPrivateKey = p.cfg.GuardianProverPrivateKey
 	}
 	if p.srv, err = server.New(proverServerOpts); err != nil {
@@ -1038,9 +1038,14 @@ func (p *Prover) getSubmitterByTier(tier uint16) proofSubmitter.Submitter {
 	return nil
 }
 
+// IsGuardianProver reutrns true if the current prover is a guardian prover.
+func (p *Prover) IsGuardianProver() bool {
+	return p.cfg.GuardianProverAddress != common.Address{}
+}
+
 // takeOneCapacity takes one capacity from the capacity manager.
 func (p *Prover) takeOneCapacity(blockID *big.Int) error {
-	if !p.cfg.GuardianProver {
+	if !p.IsGuardianProver() {
 		if _, ok := p.capacityManager.TakeOneCapacity(blockID.Uint64()); !ok {
 			return errNoCapacity
 		}
@@ -1051,7 +1056,7 @@ func (p *Prover) takeOneCapacity(blockID *big.Int) error {
 
 // releaseOneCapacity releases one capacity to the capacity manager.
 func (p *Prover) releaseOneCapacity(blockID *big.Int) {
-	if !p.cfg.GuardianProver {
+	if !p.IsGuardianProver() {
 		_, released := p.capacityManager.ReleaseOneCapacity(blockID.Uint64())
 		if !released {
 			log.Error("Failed to release capacity", "id", blockID)
diff --git a/prover/prover_test.go b/prover/prover_test.go
index a81972662..a7ae360af 100644
--- a/prover/prover_test.go
+++ b/prover/prover_test.go
@@ -53,7 +53,6 @@ func (s *ProverTestSuite) SetupTest() {
 		GuardianProverAddress:    common.HexToAddress(os.Getenv("GUARDIAN_PROVER_CONTRACT_ADDRESS")),
 		L1ProverPrivKey:          l1ProverPrivKey,
 		GuardianProverPrivateKey: l1ProverPrivKey,
-		GuardianProver:           false,
 		Dummy:                    true,
 		MaxConcurrentProvingJobs: 1,
 		ProveUnassignedBlocks:    true,
@@ -149,7 +148,6 @@ func (s *ProverTestSuite) TestInitError() {
 }
 
 func (s *ProverTestSuite) TestOnBlockProposed() {
-	s.p.cfg.GuardianProver = true
 	// Init prover
 	l1ProverPrivKey, err := crypto.ToECDSA(common.Hex2Bytes(os.Getenv("L1_PROVER_PRIVATE_KEY")))
 	s.Nil(err)
@@ -221,7 +219,6 @@ func (s *ProverTestSuite) TestContestWrongBlocks() {
 		Tier:    e.MinTier,
 	}))
 	s.p.cfg.ContesterMode = true
-	s.p.cfg.GuardianProver = true
 
 	// Submit a wrong proof at first.
 	sink := make(chan *bindings.TaikoL1ClientTransitionProved)