diff --git a/archive.go b/archive.go
index 4a0c5d6..a47ec28 100644
--- a/archive.go
+++ b/archive.go
@@ -24,7 +24,6 @@ import (
 	"net/url"
 	"os"
 	"path/filepath"
-	"reflect"
 	"strings"
 
 	"github.com/fauu/gomicsv/archive"
@@ -119,7 +118,7 @@ func (app *App) doLoadArchive(path string, assumeHTTPURL bool, httpReferer strin
 }
 
 func (app *App) archiveIsLoaded() bool {
-	return app.S.Archive != nil && !reflect.ValueOf(app.S.Archive).IsNil() && app.S.ArchivePath != ""
+	return app.S.ArchivePath != ""
 }
 
 func (app *App) archiveGetBaseName() string {
@@ -144,7 +143,6 @@ func (app *App) archiveClose() {
 
 	app.S.Archive.Close()
 
-	app.S.Archive = nil
 	app.S.ArchivePath = ""
 	app.S.ArchivePos = 0
 
diff --git a/archive/util.go b/archive/util.go
index c868938..a322015 100644
--- a/archive/util.go
+++ b/archive/util.go
@@ -119,7 +119,7 @@ func NewFile(f *os.File) *File {
 }
 
 func (r *File) Size() (int64, error) {
-	fi, err := r.Stat()
+	fi, err := r.Stat() // nolint:typecheck
 	if err != nil {
 		return 0, err
 	}
@@ -127,11 +127,11 @@ func (r *File) Size() (int64, error) {
 }
 
 func (r *File) SetSize(n int64) error {
-	return r.Truncate(n)
+	return r.Truncate(n) // nolint:typecheck
 }
 
 func (r *File) Ext() string {
-	ext := filepath.Ext(r.Name())
+	ext := filepath.Ext(r.Name()) // nolint:typecheck
 	if len(ext) <= 1 || ext[0] != '.' {
 		return ""
 	}
@@ -156,7 +156,7 @@ func (b *Buffer) SetSize(int64) error {
 }
 
 func (b *Buffer) Size() (int64, error) {
-	return int64(b.Len()), nil
+	return int64(b.Len()), nil // nolint:typecheck
 }
 
 func strcmp(a, b string, nat bool) bool {