diff --git a/pkg/services/ngalert/remote/client/alertmanager.go b/pkg/services/ngalert/remote/client/alertmanager.go
index bfc1145d7e0..f4d6c3ee033 100644
--- a/pkg/services/ngalert/remote/client/alertmanager.go
+++ b/pkg/services/ngalert/remote/client/alertmanager.go
@@ -56,7 +56,7 @@ func NewAlertmanager(cfg *AlertmanagerConfig, metrics *metrics.RemoteAlertmanage
 		logger:          cfg.Logger,
 		url:             cfg.URL,
 		AlertmanagerAPI: amclient.New(r, nil),
-		httpClient:      tc,
+		httpClient:      trc,
 	}, nil
 }