diff --git a/signer/core/signed_data.go b/signer/core/signed_data.go
index e457da07da..3f8f7da5ac 100644
--- a/signer/core/signed_data.go
+++ b/signer/core/signed_data.go
@@ -21,7 +21,6 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"golang.org/x/crypto/sha3"
 	"math/big"
 	"mime"
 	"regexp"
@@ -30,6 +29,8 @@ import (
 	"strings"
 	"unicode"
 
+	"golang.org/x/crypto/sha3"
+
 	"github.com/ethereum/go-ethereum/common/math"
 
 	"github.com/ethereum/go-ethereum/accounts"