diff --git a/rpc/backend/account_info.go b/rpc/backend/account_info.go
index bc1799740f..604acc4873 100644
--- a/rpc/backend/account_info.go
+++ b/rpc/backend/account_info.go
@@ -110,7 +110,8 @@ func (b *Backend) GetProof(address common.Address, storageKeys []string, blockNr
 	}
 
 	// query account proofs
-	_, proof, err := b.queryClient.GetProof(clientCtx, authtypes.StoreKey, address.Bytes())
+	accountKey := append(authtypes.AddressStoreKeyPrefix.Bytes(), address.Bytes()...)
+	_, proof, err := b.queryClient.GetProof(clientCtx, authtypes.StoreKey, accountKey)
 	if err != nil {
 		return nil, err
 	}
diff --git a/rpc/backend/account_info_test.go b/rpc/backend/account_info_test.go
index 87ce26f9a8..6108f018a5 100644
--- a/rpc/backend/account_info_test.go
+++ b/rpc/backend/account_info_test.go
@@ -5,6 +5,7 @@ import (
 	"math/big"
 
 	tmrpcclient "github.com/cometbft/cometbft/rpc/client"
+	authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"google.golang.org/grpc/metadata"
@@ -140,7 +141,7 @@ func (suite *BackendTestSuite) TestGetProof() {
 					client,
 					bn.Int64(),
 					"store/acc/key",
-					address1.Bytes(),
+					append(authtypes.AddressStoreKeyPrefix.Bytes(), address1.Bytes()...),
 					tmrpcclient.ABCIQueryOptions{Height: iavlHeight, Prove: true},
 				)
 			},
diff --git a/rpc/backend/sign_tx_test.go b/rpc/backend/sign_tx_test.go
index 56632d68ab..b6e030d4fa 100644
--- a/rpc/backend/sign_tx_test.go
+++ b/rpc/backend/sign_tx_test.go
@@ -202,7 +202,7 @@ func (suite *BackendTestSuite) TestSign() {
 
 			responseBz, err := suite.backend.Sign(tc.fromAddr, tc.inputBz)
 			if tc.expPass {
-				signature, _, err := suite.backend.clientCtx.Keyring.SignByAddress((sdk.AccAddress)(from.Bytes()), tc.inputBz, signing.SignMode_SIGN_MODE_DIRECT)
+				signature, _, err := suite.backend.clientCtx.Keyring.SignByAddress((sdk.AccAddress)(from.Bytes()), tc.inputBz, signing.SignMode_SIGN_MODE_LEGACY_AMINO_JSON)
 				signature[goethcrypto.RecoveryIDOffset] += 27
 				suite.Require().NoError(err)
 				suite.Require().Equal((hexutil.Bytes)(signature), responseBz)
@@ -251,7 +251,7 @@ func (suite *BackendTestSuite) TestSignTypedData() {
 
 			if tc.expPass {
 				sigHash, _, err := apitypes.TypedDataAndHash(tc.inputTypedData)
-				signature, _, err := suite.backend.clientCtx.Keyring.SignByAddress((sdk.AccAddress)(from.Bytes()), sigHash, signing.SignMode_SIGN_MODE_DIRECT)
+				signature, _, err := suite.backend.clientCtx.Keyring.SignByAddress((sdk.AccAddress)(from.Bytes()), sigHash, signing.SignMode_SIGN_MODE_LEGACY_AMINO_JSON)
 				signature[goethcrypto.RecoveryIDOffset] += 27
 				suite.Require().NoError(err)
 				suite.Require().Equal((hexutil.Bytes)(signature), responseBz)