diff --git a/pkg/app/fs.go b/pkg/app/fs.go
index 475d35326..dd9e1f40e 100644
--- a/pkg/app/fs.go
+++ b/pkg/app/fs.go
@@ -58,6 +58,7 @@ import (
 	"strings"
 	"sync"
 	"time"
+
 	"github.com/cloudwego/hertz/internal/bytesconv"
 	"github.com/cloudwego/hertz/internal/bytestr"
 	"github.com/cloudwego/hertz/internal/nocopy"
@@ -1343,7 +1344,6 @@ func (r *smallRangeReader) Close() error {
 }
 
 func (r *smallRangeReader) Read(p []byte) (int, error) {
-
 	ff := r.ff
 	var err error
 	cPos, cLen, n := 0, 0, 0
diff --git a/pkg/app/fs_test.go b/pkg/app/fs_test.go
index 529552e5e..628ed8281 100644
--- a/pkg/app/fs_test.go
+++ b/pkg/app/fs_test.go
@@ -53,11 +53,12 @@ import (
 	"strings"
 	"testing"
 	"time"
+
+	"github.com/cloudwego/hertz/internal/bytesconv"
 	"github.com/cloudwego/hertz/pkg/common/test/mock"
 	"github.com/cloudwego/hertz/pkg/protocol"
 	"github.com/cloudwego/hertz/pkg/protocol/consts"
 	"github.com/cloudwego/hertz/pkg/protocol/http1/resp"
-	"github.com/cloudwego/hertz/internal/bytesconv"
 )
 
 func TestNewVHostPathRewriter(t *testing.T) {
@@ -413,7 +414,6 @@ func testFSSingleByteRangeOfWriteTo(t *testing.T, h HandlerFunc, filePath string
 				body1, bytesconv.B2s(expectedBody[start:end+1]), filePath, startPos, endPos)
 		}
 	}
-
 }
 
 func testFSSingleByteRangeOfRead(t *testing.T, h HandlerFunc, filePath string) {
@@ -630,7 +630,6 @@ func testFSMultiByteRangeOfWriteTo(t *testing.T, h HandlerFunc, filePath string)
 	if body != string(singleBodys) {
 		t.Fatalf("multipart ranges content is invalid")
 	}
-
 }
 
 func testFSMultiByteRangeOfRead(t *testing.T, h HandlerFunc, filePath string) {