diff --git a/gen-proto.sh b/gen-proto.sh
index 5ef46c2..d578f4c 100755
--- a/gen-proto.sh
+++ b/gen-proto.sh
@@ -39,7 +39,7 @@ npx pbts \
   -o ./src/proto.d.ts \
   ./src/proto.js
 
-echo Edit proto.d.ts to resolve the conflict of `tendermint` namespace.
-echo Require to rename `cometbft` proto
+echo Edit proto.d.ts to resolve the conflict of tendermint namespace.
+echo Require to rename cometbft proto
 
 rm -r ./proto
diff --git a/src/rest/bank/bank-multisig.spec.ts b/src/rest/bank/bank-multisig.spec.ts
index aa67572..a3d0acf 100644
--- a/src/rest/bank/bank-multisig.spec.ts
+++ b/src/rest/bank/bank-multisig.spec.ts
@@ -29,8 +29,8 @@ describe('bank', () => {
     });
     const address = cosmosclient.AccAddress.fromPublicKey(multisigPubKey);
 
-    const fromAddress = address;
-    const toAddress = address;
+    const fromAddress = address.toString();
+    const toAddress = address.toString();
 
     // get account info
     const account = await cosmosclient.rest.auth
@@ -45,8 +45,8 @@ describe('bank', () => {
 
     // build tx
     const msgSend = new cosmosclient.proto.cosmos.bank.v1beta1.MsgSend({
-      from_address: fromAddress.toString(),
-      to_address: toAddress.toString(),
+      from_address: fromAddress,
+      to_address: toAddress,
       amount: [{ denom: 'token', amount: '1' }],
     });
 
diff --git a/src/rest/bank/bank.spec.ts b/src/rest/bank/bank.spec.ts
index a3de46e..5597299 100644
--- a/src/rest/bank/bank.spec.ts
+++ b/src/rest/bank/bank.spec.ts
@@ -15,8 +15,8 @@ describe('bank', () => {
 
     expect(address.toString()).toBe('cosmos14ynfqqa6j5k3kcqm2ymf3l66d9x07ysxgnvdyx');
 
-    const fromAddress = address;
-    const toAddress = address;
+    const fromAddress = address.toString();
+    const toAddress = address.toString();
 
     // get account info
     const account = await cosmosclient.rest.auth
@@ -31,8 +31,8 @@ describe('bank', () => {
 
     // build tx
     const msgSend = new cosmosclient.proto.cosmos.bank.v1beta1.MsgSend({
-      from_address: fromAddress.toString(),
-      to_address: toAddress.toString(),
+      from_address: fromAddress,
+      to_address: toAddress,
       amount: [{ denom: 'token', amount: '1' }],
     });
 
diff --git a/src/rest/feegrant/module.ts b/src/rest/feegrant/module.ts
index 43e3fcb..db2fd7f 100644
--- a/src/rest/feegrant/module.ts
+++ b/src/rest/feegrant/module.ts
@@ -1,7 +1,7 @@
 import { QueryApi } from '../../openapi/api';
 import { CosmosSDK } from '../../sdk';
 
-export function allowance(sdk: CosmosSDK, granter: AccAddress, grantee: AccAddress) {
+export function allowance(sdk: CosmosSDK, granter: string, grantee: string) {
   return new QueryApi(undefined, sdk.url).allowance(granter.toString(), grantee.toString());
 }