diff --git a/pkg/auth/krb5.go b/pkg/auth/krb5.go
index 266d7d9dc..6aa961e6d 100644
--- a/pkg/auth/krb5.go
+++ b/pkg/auth/krb5.go
@@ -3,13 +3,14 @@ package auth
 import (
 	"encoding/hex"
 	"fmt"
+	"log"
+
 	"github.com/jackc/pgx/v5/pgproto3"
 	"github.com/jcmturner/gokrb5/v8/credentials"
 	"github.com/jcmturner/gokrb5/v8/gssapi"
 	"github.com/jcmturner/gokrb5/v8/keytab"
 	"github.com/jcmturner/gokrb5/v8/service"
 	"github.com/pg-sharding/spqr/pkg/client"
-	"log"
 )
 
 type BaseAuthModule struct {
@@ -96,7 +97,7 @@ func (k *Kerberos) Process(cl client.Client) (cred *credentials.Credentials, err
 	if status.Code == gssapi.StatusContinueNeeded {
 		errText := "Kerberos GSS-API continue needed"
 		log.Print(errText)
-		return nil, fmt.Errorf(errText)
+		return nil, fmt.Errorf("%s", errText)
 	}
 	if authed {
 		ctx := st.Context()
diff --git a/pkg/models/spqrerror/spqrerror.go b/pkg/models/spqrerror/spqrerror.go
index e73f2493f..bbaab6fce 100644
--- a/pkg/models/spqrerror/spqrerror.go
+++ b/pkg/models/spqrerror/spqrerror.go
@@ -79,7 +79,7 @@ type SpqrError struct {
 //   - *SpqrError: The created SpqrError.
 func New(errorCode string, errorMsg string) *SpqrError {
 	err := &SpqrError{
-		Err:       fmt.Errorf(errorMsg),
+		Err:       fmt.Errorf("%s", errorMsg),
 		ErrorCode: errorCode,
 	}
 	return err
@@ -95,7 +95,7 @@ func New(errorCode string, errorMsg string) *SpqrError {
 //   - *SpqrError: The created SpqrError.
 func NewByCode(errorCode string) *SpqrError {
 	err := &SpqrError{
-		Err:       fmt.Errorf(GetMessageByCode(errorCode)),
+		Err:       fmt.Errorf("%s", GetMessageByCode(errorCode)),
 		ErrorCode: errorCode,
 	}
 	return err
diff --git a/router/statistics/query_time_statistics.go b/router/statistics/query_time_statistics.go
index fdd876b4f..6f306d123 100644
--- a/router/statistics/query_time_statistics.go
+++ b/router/statistics/query_time_statistics.go
@@ -38,7 +38,8 @@ var queryStatistics = statistics{
 
 func InitStatistics(q []float64) {
 	queryStatistics.Quantiles = q
-	if queryStatistics.Quantiles != nil && len(queryStatistics.Quantiles) > 0 {
+
+	if len(queryStatistics.Quantiles) > 0 { // also not nil
 		queryStatistics.NeedToCollectData = false
 	} else {
 		queryStatistics.NeedToCollectData = true