diff --git a/x/gov/keeper/crosschain.go b/x/gov/keeper/crosschain.go
index f82f8e45ea..21bbfdad70 100644
--- a/x/gov/keeper/crosschain.go
+++ b/x/gov/keeper/crosschain.go
@@ -66,13 +66,16 @@ func (k Keeper) SyncParams(ctx sdk.Context, destChainId sdk.ChainID, cpc govv1.C
 		Target: addresses,
 	}
 
-	encodedPackage := pack.MustSerialize()
+	encodedPackage, err := pack.Serialize()
+	if err != nil {
+		return sdkerrors.Wrapf(types.ErrInvalidSyncParamPackage, "fail to serialize, err: %s", err.Error())
+	}
 
 	if !k.crossChainKeeper.IsDestChainSupported(destChainId) {
 		return sdkerrors.Wrapf(types.ErrChainNotSupported, "destination chain (%d) is not supported", destChainId)
 	}
 
-	_, err := k.crossChainKeeper.CreateRawIBCPackageWithFee(
+	_, err = k.crossChainKeeper.CreateRawIBCPackageWithFee(
 		ctx,
 		destChainId,
 		types.SyncParamsChannelID,
diff --git a/x/gov/types/crosschain.go b/x/gov/types/crosschain.go
index 259c0a2e0e..ac63a5c371 100644
--- a/x/gov/types/crosschain.go
+++ b/x/gov/types/crosschain.go
@@ -35,10 +35,10 @@ var (
 	}
 )
 
-func (p SyncParamsPackage) MustSerialize() []byte {
+func (p SyncParamsPackage) Serialize() ([]byte, error) {
 	encodedBytes, err := syncParamsPackageArgs.Pack(&p)
 	if err != nil {
-		panic("encode params change sync package error")
+		return nil, err
 	}
-	return encodedBytes
+	return encodedBytes, nil
 }
diff --git a/x/gov/types/errors.go b/x/gov/types/errors.go
index 71c4ac98b9..248a918d2f 100644
--- a/x/gov/types/errors.go
+++ b/x/gov/types/errors.go
@@ -33,7 +33,7 @@ var (
 	ErrAddressSizeNotMatch     = errors.Register(ModuleName, 25, "number of old address not equal to new addresses")
 	ErrAddressNotValid         = errors.Register(ModuleName, 26, "address format is not valid")
 	ErrExceedParamsChangeLimit = errors.Register(ModuleName, 27, "exceed params change limit")
-	ErrInvalidUpgradeProposal  = errors.Register(ModuleName, 28, "invalid sync params package")
+	ErrInvalidSyncParamPackage = errors.Register(ModuleName, 28, "invalid sync params package")
 	ErrInvalidValue            = errors.Register(ModuleName, 29, "decode hex value failed")
 
 	ErrChainNotSupported = errors.Register(ModuleName, 30, "crosschain: chain is not supported")
diff --git a/x/gov/types/v1/crosschain.go b/x/gov/types/v1/crosschain.go
index 2974c89631..000094576d 100644
--- a/x/gov/types/v1/crosschain.go
+++ b/x/gov/types/v1/crosschain.go
@@ -1,8 +1,10 @@
 package v1
 
 import (
+	"encoding/hex"
 	"strings"
 
+	sdkerrors "cosmossdk.io/errors"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/x/gov/types"
 )
@@ -36,6 +38,11 @@ func (m *CrossChainParamsChange) ValidateBasic() error {
 			if err != nil {
 				return types.ErrAddressNotValid
 			}
+		} else {
+			_, err := hex.DecodeString(value)
+			if err != nil {
+				return sdkerrors.Wrapf(types.ErrInvalidValue, "value is not valid %s", value)
+			}
 		}
 		_, err := sdk.AccAddressFromHexUnsafe(target)
 		if err != nil {