diff --git a/oviewer/config.go b/oviewer/config.go
index 5b5af001..ee261af2 100644
--- a/oviewer/config.go
+++ b/oviewer/config.go
@@ -60,7 +60,7 @@ func NewConfig() Config {
 		Prompt: OVPromptConfig{
 			Normal: OVPromptConfigNormal{
 				ShowFilename: true,
-				InvertColor: true,
+				InvertColor:  true,
 			},
 		},
 	}
diff --git a/oviewer/control_test.go b/oviewer/control_test.go
index 80fd7231..4b509c65 100644
--- a/oviewer/control_test.go
+++ b/oviewer/control_test.go
@@ -312,7 +312,7 @@ func TestDocument_requestFollow(t *testing.T) {
 			for !m.BufEOF() {
 			}
 
-			af, err := os.OpenFile(fname, os.O_APPEND|os.O_RDWR, 0600)
+			af, err := os.OpenFile(fname, os.O_APPEND|os.O_RDWR, 0o600)
 			if err != nil {
 				t.Fatal("open error", tt.fields.FileName)
 			}
diff --git a/oviewer/move_lateral.go b/oviewer/move_lateral.go
index b0945b3b..a6e4ad29 100644
--- a/oviewer/move_lateral.go
+++ b/oviewer/move_lateral.go
@@ -148,7 +148,7 @@ func (m *Document) moveToWidth(scr SCR, moveTo int) (int, int, error) {
 		return m.x, m.columnCursor, ErrNoColumn
 	}
 
-	var widths = make([]int, 0, len(m.columnWidths)+2)
+	widths := make([]int, 0, len(m.columnWidths)+2)
 	widths = append(widths, 0)
 	widths = append(widths, m.columnWidths...)
 	var cl, cr int