diff --git a/charts/kube-prometheus-stack/templates/alertmanager/servicemonitor.yaml b/charts/kube-prometheus-stack/templates/alertmanager/servicemonitor.yaml
index 8d507ba5e002..cc93fbfa015c 100644
--- a/charts/kube-prometheus-stack/templates/alertmanager/servicemonitor.yaml
+++ b/charts/kube-prometheus-stack/templates/alertmanager/servicemonitor.yaml
@@ -54,15 +54,7 @@ spec:
     {{- if .Values.alertmanager.serviceMonitor.proxyUrl }}
     proxyUrl: {{ .Values.alertmanager.serviceMonitor.proxyUrl}}
     {{- end }}
-    {{- if .Values.alertmanager.serviceMonitor.scheme }}
-    scheme: {{ .Values.alertmanager.serviceMonitor.scheme }}
-    {{- end }}
-    {{- if .Values.alertmanager.serviceMonitor.bearerTokenFile }}
-    bearerTokenFile: {{ .Values.alertmanager.serviceMonitor.bearerTokenFile }}
-    {{- end }}
-    {{- if .Values.alertmanager.serviceMonitor.tlsConfig }}
-    tlsConfig: {{ toYaml .Values.alertmanager.serviceMonitor.tlsConfig | nindent 6 }}
-    {{- end }}
+    scheme: http
     path: "/metrics"
 {{- if .Values.alertmanager.serviceMonitor.metricRelabelings }}
     metricRelabelings: