diff --git a/pkg/mcs/resourcemanager/server/manager.go b/pkg/mcs/resourcemanager/server/manager.go
index 2462a4f1f64..f71623ae0cd 100644
--- a/pkg/mcs/resourcemanager/server/manager.go
+++ b/pkg/mcs/resourcemanager/server/manager.go
@@ -48,11 +48,6 @@ const (
 
 	reservedDefaultGroupName = "default"
 	middlePriority           = 8
-
-	// Labels for the metrics.
-	ruPerSec   = "ru_per_sec"
-	ruCapacity = "ru_capacity"
-	priority   = "priority"
 )
 
 // Manager is the manager of resource group.
@@ -478,9 +473,9 @@ func (m *Manager) backgroundMetricsFlush(ctx context.Context) {
 					ru = 0
 				}
 				availableRUCounter.WithLabelValues(group.Name, group.Name).Set(ru)
-				resourceGroupConfigGauge.WithLabelValues(group.Name, priority).Set(float64(group.Priority))
-				resourceGroupConfigGauge.WithLabelValues(group.Name, ruPerSec).Set(float64(group.RUSettings.RU.Settings.FillRate))
-				resourceGroupConfigGauge.WithLabelValues(group.Name, ruCapacity).Set(float64(group.RUSettings.RU.Settings.BurstLimit))
+				resourceGroupConfigGauge.WithLabelValues(group.Name, priorityLabel).Set(float64(group.Priority))
+				resourceGroupConfigGauge.WithLabelValues(group.Name, ruPerSecLabel).Set(float64(group.RUSettings.RU.Settings.FillRate))
+				resourceGroupConfigGauge.WithLabelValues(group.Name, ruCapacityLabel).Set(float64(group.RUSettings.RU.Settings.BurstLimit))
 			}
 		case <-recordMaxTicker.C:
 			// Record the sum of RRU and WRU every second.
diff --git a/pkg/mcs/resourcemanager/server/metrics.go b/pkg/mcs/resourcemanager/server/metrics.go
index 5faffcf1018..766ca841268 100644
--- a/pkg/mcs/resourcemanager/server/metrics.go
+++ b/pkg/mcs/resourcemanager/server/metrics.go
@@ -29,6 +29,11 @@ const (
 	tiflashTypeLabel          = "ap"
 	defaultTypeLabel          = "tp"
 	newResourceGroupNameLabel = "resource_group"
+
+	// Labels for the config.
+	ruPerSecLabel   = "ru_per_sec"
+	ruCapacityLabel = "ru_capacity"
+	priorityLabel   = "priority"
 )
 
 var (
@@ -131,7 +136,7 @@ var (
 			Subsystem: serverSubsystem,
 			Name:      "group_config",
 			Help:      "Config of the resource group.",
-		}, []string{newResourceGroupNameLabel, "type"})
+		}, []string{newResourceGroupNameLabel, typeLabel})
 )
 
 func init() {