diff --git a/charts/prometheus-stackdriver-exporter/Chart.yaml b/charts/prometheus-stackdriver-exporter/Chart.yaml
index 25ec675840d6..d49fb67b836e 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: 4.4.0
+version: 4.4.1
 appVersion: v0.14.1
 home: https://www.stackdriver.com/
 sources:
diff --git a/charts/prometheus-stackdriver-exporter/templates/deployment.yaml b/charts/prometheus-stackdriver-exporter/templates/deployment.yaml
index 5125c9505b90..61cf8462df0a 100644
--- a/charts/prometheus-stackdriver-exporter/templates/deployment.yaml
+++ b/charts/prometheus-stackdriver-exporter/templates/deployment.yaml
@@ -37,6 +37,9 @@ spec:
         - name: {{ . }}
       {{- end }}
       {{- end }}
+      {{- if .Values.priorityClassName }}
+      priorityClassName: {{ .Values.priorityClassName }}
+      {{- end }}
       serviceAccount: {{ template "stackdriver-exporter.serviceAccountName" . }}
       serviceAccountName: {{ template "stackdriver-exporter.serviceAccountName" . }}
       restartPolicy: {{ .Values.restartPolicy }}
@@ -69,7 +72,7 @@ spec:
             - --google.project-id={{ .Values.stackdriver.projectId }}
             - --monitoring.metrics-interval={{ .Values.stackdriver.metrics.interval }}
             - --monitoring.metrics-offset={{ .Values.stackdriver.metrics.offset }}
-            - --monitoring.metrics-type-prefixes={{ .Values.stackdriver.metrics.typePrefixes }}
+            - --monitoring.metrics-type-prefixes={{ .Values.stackdriver.metrics.typePrefixes | replace " " "" }}
             {{- range .Values.stackdriver.metrics.filters }}
             - --monitoring.filters={{ . }}
             {{- end }}
diff --git a/charts/prometheus-stackdriver-exporter/values.yaml b/charts/prometheus-stackdriver-exporter/values.yaml
index 0eb38918f5e3..89bc8243d6ac 100644
--- a/charts/prometheus-stackdriver-exporter/values.yaml
+++ b/charts/prometheus-stackdriver-exporter/values.yaml
@@ -117,6 +117,9 @@ tolerations: []
   #   value: "value"
   #   effect: "NoSchedule|PreferNoSchedule|NoExecute(1.6 only)"
 
+## Pod priority class
+##
+priorityClassName: ""
 
 ## Service Account
 ##