diff --git a/display/graph/dashboard/global.go b/display/graph/dashboard/global.go
index d28f3a7..c954ce0 100644
--- a/display/graph/dashboard/global.go
+++ b/display/graph/dashboard/global.go
@@ -106,7 +106,7 @@
 
 // newLayoutButtons returns buttons that dynamically switch the layouts.
 func newLayoutButtons(c *container.Container) ([]*button.Button, error) {
-	var buttons []*button.Button
+	buttons := make([]*button.Button, len(strToLayoutType))
 
 	opts := []button.Option{
 		button.WidthFor(longestString(template.Buttons.Texts)),
@@ -127,7 +127,8 @@
 		if err != nil {
 			return nil, err
 		}
-		buttons = append(buttons, b)
+
+		buttons[int(lt)] = b
 	}
 
 	return buttons, nil
diff --git a/display/graph/gauge/gauge.go b/display/graph/gauge/gauge.go
index c7571ee..a99234d 100644
--- a/display/graph/gauge/gauge.go
+++ b/display/graph/gauge/gauge.go
@@ -52,6 +52,11 @@
 // Update updates the MetricColumn's `Absolute` and `BorderTitle`.
 func (mc *MetricColumn) Update(data []*schema.SelectedRecord) error {
 	for i, item := range data {
+		// The number of `SelectedRecord` data may exceed the number of gauges in a `MetricColumn`.
+		if i >= len(mc.gauges) {
+			break
+		}
+
 		strValue := *(item.Value)
 		v, err := strconv.Atoi(strValue)
 		if err != nil {