if err != nil {
						util.PromDiff(t, promInst, cluster, httpDestinationQuery)
						return err
					}
					httpChecked = true
				}
				_, err = util.QueryPrometheus(t, cluster, grpcDestinationQuery, promInst)
				if err != nil {
					util.PromDiff(t, promInst, cluster, grpcDestinationQuery)
					return err
				}
				return nil