diff --git a/pkg/api/cloudwatch/metrics.go b/pkg/api/cloudwatch/metrics.go
index 2f1305f428a..16b496d6be6 100644
--- a/pkg/api/cloudwatch/metrics.go
+++ b/pkg/api/cloudwatch/metrics.go
@@ -126,7 +126,7 @@ func init() {
 		"AWS/NATGateway":       {"NatGatewayId"},
 		"AWS/OpsWorks":         {"StackId", "LayerId", "InstanceId"},
 		"AWS/Redshift":         {"NodeID", "ClusterIdentifier"},
-		"AWS/RDS":              {"DBInstanceIdentifier", "DBClusterIdentifier", "DatabaseClass", "EngineName", "Role"},
+		"AWS/RDS":              {"DBInstanceIdentifier", "DBClusterIdentifier", "DbClusterIdentifier", "DatabaseClass", "EngineName", "Role"},
 		"AWS/Route53":          {"HealthCheckId", "Region"},
 		"AWS/S3":               {"BucketName", "StorageType", "FilterId"},
 		"AWS/SES":              {},