diff --git a/charts/prometheus-stackdriver-exporter/Chart.yaml b/charts/prometheus-stackdriver-exporter/Chart.yaml
index a613d4671df6..97d8b3bd35c0 100644
--- a/charts/prometheus-stackdriver-exporter/Chart.yaml
+++ b/charts/prometheus-stackdriver-exporter/Chart.yaml
@@ -1,7 +1,7 @@
 apiVersion: v1
 description: Stackdriver exporter for Prometheus
 name: prometheus-stackdriver-exporter
-version: 4.12.0
+version: 4.13.0
 appVersion: v0.18.0
 home: https://www.stackdriver.com/
 sources:
diff --git a/charts/prometheus-stackdriver-exporter/templates/servicemonitor.yaml b/charts/prometheus-stackdriver-exporter/templates/servicemonitor.yaml
index 051fa875cdac..351225741098 100644
--- a/charts/prometheus-stackdriver-exporter/templates/servicemonitor.yaml
+++ b/charts/prometheus-stackdriver-exporter/templates/servicemonitor.yaml
@@ -4,7 +4,8 @@ kind: ServiceMonitor
 metadata:
   name: {{ template "stackdriver-exporter.fullname" .  }}
   {{- if .Values.serviceMonitor.namespace }}
-  namespace: {{ .Values.serviceMonitor.namespace }}
+  {{- with .Values.serviceMonitor.namespace }}
+  namespace: {{ . }}
   {{- end }}
   labels:
     {{- include "stackdriver-exporter.labels" . | indent 4 }}
diff --git a/charts/prometheus-stackdriver-exporter/values.yaml b/charts/prometheus-stackdriver-exporter/values.yaml
index f9ebcdf2a113..447d994d2f5d 100644
--- a/charts/prometheus-stackdriver-exporter/values.yaml
+++ b/charts/prometheus-stackdriver-exporter/values.yaml
@@ -188,7 +188,7 @@ serviceAccount:
 # Enable this if you're using https://github.com/coreos/prometheus-operator
 serviceMonitor:
   enabled: false
-  namespace: monitoring
+  namespace: ""
   # scrapeClass
   scrapeClass:
   # additionalLabels is the set of additional labels to add to the ServiceMonitor