diff --git a/pkg/ruler/notifier.go b/pkg/ruler/notifier.go
index 4840f4eea2..e91c84949a 100644
--- a/pkg/ruler/notifier.go
+++ b/pkg/ruler/notifier.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"flag"
 	"fmt"
+	"github.com/prometheus/client_golang/prometheus"
 	"net/url"
 	"regexp"
 	"strings"
@@ -43,12 +44,12 @@ type rulerNotifier struct {
 	logger    gklog.Logger
 }
 
-func newRulerNotifier(o *notifier.Options, l gklog.Logger) *rulerNotifier {
+func newRulerNotifier(o *notifier.Options, l gklog.Logger, registerer prometheus.Registerer) *rulerNotifier {
 	sdCtx, sdCancel := context.WithCancel(context.Background())
 	return &rulerNotifier{
 		notifier:  notifier.NewManager(o, l),
 		sdCancel:  sdCancel,
-		sdManager: discovery.NewManager(sdCtx, l, nil),
+		sdManager: discovery.NewManager(sdCtx, l, registerer),
 		logger:    l,
 	}
 }