diff --git a/templates/values.yaml.tpl b/templates/values.yaml.tpl
index fa70b7f..e44c2f2 100644
--- a/templates/values.yaml.tpl
+++ b/templates/values.yaml.tpl
@@ -168,7 +168,7 @@ controller:
     proxy-buffer-size: "16k"
     proxy-body-size: "50m"
     keepalive: ${keepalive}
-    proxy-buffering: ${proxy_response_buffering}
+    proxy-buffering: "${proxy_response_buffering}"
 
 %{ if enable_latest_tls }
     ssl-protocols: "TLSv1.2 TLSv1.3"