diff --git a/pkg/services/alerting/notifiers/pagerduty.go b/pkg/services/alerting/notifiers/pagerduty.go
index c3bcf475c46..9fe27f67b4c 100644
--- a/pkg/services/alerting/notifiers/pagerduty.go
+++ b/pkg/services/alerting/notifiers/pagerduty.go
@@ -5,8 +5,6 @@ import (
 	"strconv"
 	"time"
 
-	"fmt"
-
 	"github.com/grafana/grafana/pkg/bus"
 	"github.com/grafana/grafana/pkg/components/simplejson"
 	"github.com/grafana/grafana/pkg/infra/log"
@@ -80,9 +78,9 @@ func (pn *PagerdutyNotifier) Notify(evalContext *alerting.EvalContext) error {
 	if evalContext.Rule.State == models.AlertStateOK {
 		eventType = "resolve"
 	}
-	customData := triggMetrString
+	customData := simplejson.New()
 	for _, evt := range evalContext.EvalMatches {
-		customData = customData + fmt.Sprintf("%s: %v\n", evt.Metric, evt.Value)
+		customData.Set(evt.Metric, evt.Value)
 	}
 
 	pn.log.Info("Notifying Pagerduty", "event_type", eventType)