diff --git a/charts/ingress-nginx/templates/controller-deployment.yaml b/charts/ingress-nginx/templates/controller-deployment.yaml
index 41276c6fa..cdf96600c 100644
--- a/charts/ingress-nginx/templates/controller-deployment.yaml
+++ b/charts/ingress-nginx/templates/controller-deployment.yaml
@@ -54,7 +54,7 @@ spec:
       imagePullSecrets: {{ toYaml .Values.imagePullSecrets | nindent 8 }}
     {{- end }}
     {{- if .Values.controller.priorityClassName }}
-      priorityClassName: {{ .Values.controller.priorityClassName }}
+      priorityClassName: {{ .Values.controller.priorityClassName | quote }}
     {{- end }}
     {{- if or .Values.controller.podSecurityContext .Values.controller.sysctls }}
       securityContext: