diff --git a/charts/ingress-nginx/templates/controller-servicemonitor.yaml b/charts/ingress-nginx/templates/controller-servicemonitor.yaml
index 8ab16f0b2..482fe7f3c 100644
--- a/charts/ingress-nginx/templates/controller-servicemonitor.yaml
+++ b/charts/ingress-nginx/templates/controller-servicemonitor.yaml
@@ -5,6 +5,8 @@ metadata:
   name: {{ include "ingress-nginx.controller.fullname" . }}
 {{- if .Values.controller.metrics.serviceMonitor.namespace }}
   namespace: {{ .Values.controller.metrics.serviceMonitor.namespace | quote }}
+{{- else }}
+  namespace: {{ .Release.Namespace }}
 {{- end }}
   labels:
     {{- include "ingress-nginx.labels" . | nindent 4 }}