diff --git a/cmd/flags/prover.go b/cmd/flags/prover.go
index f0c802b25..2fba90db1 100644
--- a/cmd/flags/prover.go
+++ b/cmd/flags/prover.go
@@ -26,12 +26,6 @@ var (
 		Required: true,
 		Category: proverCategory,
 	}
-	RaikoHostEndpoint = &cli.StringFlag{
-		Name:     "raiko.hostEndpoint",
-		Usage:    "RPC endpoint of a Raiko host service",
-		Required: true,
-		Category: proverCategory,
-	}
 )
 
 // Optional flags used by prover.
@@ -46,6 +40,11 @@ var (
 		Usage:    "Path of ZKEVM parameters file to use",
 		Category: proverCategory,
 	}
+	RaikoHostEndpoint = &cli.StringFlag{
+		Name:     "raiko.hostEndpoint",
+		Usage:    "RPC endpoint of a Raiko host service",
+		Category: proverCategory,
+	}
 	StartingBlockID = &cli.Uint64Flag{
 		Name:     "prover.startingBlockID",
 		Usage:    "If set, prover will start proving blocks from the block with this ID",
diff --git a/prover/config.go b/prover/config.go
index 47da30987..d2730dc98 100644
--- a/prover/config.go
+++ b/prover/config.go
@@ -100,7 +100,7 @@ func NewConfigFromCliContext(c *cli.Context) (*Config, error) {
 	if c.IsSet(flags.Allowance.Name) {
 		amt, ok := new(big.Int).SetString(c.String(flags.Allowance.Name), 10)
 		if !ok {
-			return nil, fmt.Errorf("error setting allowance config value: %v", c.String(flags.Allowance.Name))
+			return nil, fmt.Errorf("invalid setting allowance config value: %v", c.String(flags.Allowance.Name))
 		}
 
 		allowance = amt
@@ -114,6 +114,10 @@ func NewConfigFromCliContext(c *cli.Context) (*Config, error) {
 		}
 	}
 
+	if !c.IsSet(flags.GuardianProver.Name) && !c.IsSet(flags.RaikoHostEndpoint.Name) {
+		return nil, fmt.Errorf("raiko host not provided")
+	}
+
 	return &Config{
 		L1WsEndpoint:                            c.String(flags.L1WSEndpoint.Name),
 		L1HttpEndpoint:                          c.String(flags.L1HTTPEndpoint.Name),
diff --git a/prover/config_test.go b/prover/config_test.go
index e27c62926..8e2c2ede3 100644
--- a/prover/config_test.go
+++ b/prover/config_test.go
@@ -89,7 +89,7 @@ func (s *ProverTestSuite) TestNewConfigFromCliContextGuardianProver() {
 	}))
 }
 
-func (s *ProverTestSuite) TestNewConfigFromCliContext_ProverKeyError() {
+func (s *ProverTestSuite) TestNewConfigFromCliContextProverKeyError() {
 	app := s.SetupApp()
 
 	s.ErrorContains(app.Run([]string{
diff --git a/prover/proof_producer/sgx_producer.go b/prover/proof_producer/sgx_producer.go
index 591c82b05..504a8b074 100644
--- a/prover/proof_producer/sgx_producer.go
+++ b/prover/proof_producer/sgx_producer.go
@@ -143,7 +143,7 @@ func (p *SGXProofProducer) callProverDaemon(ctx context.Context, opts *ProofRequ
 
 		log.Debug("Proof generation output", "output", output)
 
-		proof = common.Hex2Bytes(output.Proof)
+		proof = common.Hex2Bytes(output.Proof[2:])
 		log.Info(
 			"Proof generated",
 			"height", opts.BlockID,