diff --git a/x/distribution/handler.go b/x/distribution/handler.go
index f10f0f2..22e2b2c 100644
--- a/x/distribution/handler.go
+++ b/x/distribution/handler.go
@@ -27,22 +27,19 @@ func NewHandler(k keeper.Keeper) msg.Handler {
 	}
 }
 
-// These functions assume everything has been authenticated (ValidateBasic passed, and signatures checked)
-func handleMsgModifyWithdrawAccountId(ctx chainTypes.Context, msg types.MsgSetWithdrawAccountId, k keeper.Keeper) (*sdk.Result, error) {
-	checkAcc := func(acc AccountID) bool {
-		_, ok := acc.ToName()
-		if ok {
-			return k.AccKeeper.IsAccountExist(ctx.Context(), acc)
-		}
-		return false
+func CheckIsFindAccount(ctx chainTypes.Context, k keeper.Keeper, acc AccountID) bool {
+	_, ok := acc.ToName()
+	if ok {
+		return k.AccKeeper.IsAccountExist(ctx.Context(), acc)
 	}
+	return false
+}
 
-	types.FindAcc = checkAcc
-
+// These functions assume everything has been authenticated (ValidateBasic passed, and signatures checked)
+func handleMsgModifyWithdrawAccountId(ctx chainTypes.Context, msg types.MsgSetWithdrawAccountId, k keeper.Keeper) (*sdk.Result, error) {
 	dataMsg, _ := msg.GetData()
 	ctx.RequireAuth(dataMsg.DelegatorAccountid)
-	ExistOk := checkAcc(dataMsg.WithdrawAccountid)
-	if ExistOk {
+	if existOk := CheckIsFindAccount(ctx, k, dataMsg.WithdrawAccountid); existOk {
 		err := k.SetWithdrawAddr(ctx.Context(), dataMsg.DelegatorAccountid, dataMsg.WithdrawAccountid)
 		if err != nil {
 			return nil, err
@@ -58,7 +55,7 @@ func handleMsgModifyWithdrawAccountId(ctx chainTypes.Context, msg types.MsgSetWi
 		return &sdk.Result{Events: ctx.EventManager().Events()}, nil
 	} else {
 		ctx.Logger().Error("handleMsgModifyWithdrawAccountId, not found",
-			"WithdrawAccountid", dataMsg.WithdrawAccountid, "ExistOk", ExistOk)
+			"WithdrawAccountid", dataMsg.WithdrawAccountid, "ExistOk", existOk)
 	}
 
 	return nil, types.ErrSetWithdrawAddrDisabled
diff --git a/x/distribution/keeper/msg_test.go b/x/distribution/keeper/msg_test.go
index e2935a2..c4e6414 100644
--- a/x/distribution/keeper/msg_test.go
+++ b/x/distribution/keeper/msg_test.go
@@ -1,9 +1,10 @@
 package keeper
 
 import (
+	"testing"
+
 	chainTypes "github.com/KuChainNetwork/kuchain/chain/types"
 	"github.com/KuChainNetwork/kuchain/x/distribution/types"
-	"testing"
 
 	"github.com/stretchr/testify/require"
 )
@@ -27,14 +28,6 @@ func TestMsgSetWithdrawAddress(t *testing.T) {
 		{emptyAcc, emptyAcc, false},
 	}
 
-	types.FindAcc = func(acc chainTypes.AccountID) bool {
-		_, ok := acc.ToName()
-		if ok {
-			return ak.IsAccountExist(ctx, acc)
-		}
-		return false
-	}
-
 	for i, tc := range tests {
 		Name, _ := tc.delegatorAddr.ToName()
 		Auth, _ := ak.GetAuth(ctx, Name)
@@ -65,13 +58,6 @@ func TestMsgWithdrawDelegatorReward(t *testing.T) {
 		{Acc2, emptyAcc, false},
 		{emptyAcc, emptyAcc, false},
 	}
-	types.FindAcc = func(acc chainTypes.AccountID) bool {
-		_, ok := acc.ToName()
-		if ok {
-			return ak.IsAccountExist(ctx, acc)
-		}
-		return false
-	}
 
 	for i, tc := range tests {
 		Name, _ := tc.delegatorAddr.ToName()
@@ -101,14 +87,6 @@ func TestMsgWithdrawValidatorCommission(t *testing.T) {
 		{emptyAcc, false},
 	}
 
-	types.FindAcc = func(acc chainTypes.AccountID) bool {
-		_, ok := acc.ToName()
-		if ok {
-			return ak.IsAccountExist(ctx, acc)
-		}
-		return false
-	}
-
 	for i, tc := range tests {
 		Name, _ := tc.validatorAddr.ToName()
 		Auth, _ := ak.GetAuth(ctx, Name)
diff --git a/x/distribution/types/msg.go b/x/distribution/types/msg.go
index 863e4b7..53f83b6 100644
--- a/x/distribution/types/msg.go
+++ b/x/distribution/types/msg.go
@@ -8,10 +8,6 @@ import (
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
 )
 
-type findAccount func(acc chainType.AccountID) bool
-
-var FindAcc findAccount
-
 // Verify interface at compile time
 var _, _, _ sdk.Msg = &MsgSetWithdrawAccountId{}, &MsgWithdrawDelegatorReward{}, &MsgWithdrawValidatorCommission{}
 
@@ -54,13 +50,9 @@ func (m MsgSetWithdrawAccountId) ValidateBasic() error {
 			if data.DelegatorAccountid.Equal(&data.WithdrawAccountid) {
 				return chainType.ErrKuMsgDataSameAccount
 			}
-
-			if FindAcc != nil {
-				if !FindAcc(data.WithdrawAccountid) {
-					return chainType.ErrKuMsgDataNotFindAccount
-				}
-			}
 		}
+	} else {
+		return err
 	}
 
 	return m.KuMsg.ValidateTransfer()
@@ -103,24 +95,9 @@ type MsgWithdrawDelegatorReward struct {
 }
 
 func (m MsgWithdrawDelegatorReward) ValidateBasic() error {
-	data, err := m.GetData()
-	if err == nil {
-		_, ok := data.DelegatorAccountId.ToName()
-		if ok {
-			if FindAcc != nil {
-				if !FindAcc(data.DelegatorAccountId) {
-					return chainType.ErrKuMsgDataNotFindAccount
-				}
-			}
-		}
-		_, ok = data.ValidatorAccountId.ToName()
-		if ok {
-			if FindAcc != nil {
-				if !FindAcc(data.ValidatorAccountId) {
-					return chainType.ErrKuMsgDataNotFindAccount
-				}
-			}
-		}
+	_, err := m.GetData()
+	if err != nil {
+		return err
 	}
 
 	return m.KuMsg.ValidateTransfer()
@@ -178,16 +155,9 @@ func (m MsgWithdrawValidatorCommission) GetData() (MsgWithdrawValidatorCommissio
 }
 
 func (m MsgWithdrawValidatorCommission) ValidateBasic() error {
-	data, err := m.GetData()
-	if err == nil {
-		_, ok := data.ValidatorAccountId.ToName()
-		if ok {
-			if FindAcc != nil {
-				if !FindAcc(data.ValidatorAccountId) {
-					return chainType.ErrKuMsgDataNotFindAccount
-				}
-			}
-		}
+	_, err := m.GetData()
+	if err != nil {
+		return err
 	}
 
 	return m.KuMsg.ValidateTransfer()