diff --git a/conf/proxy-server-base.conf b/conf/proxy-server-base.conf
index 5bee725cf..fb2f3f962 100644
--- a/conf/proxy-server-base.conf
+++ b/conf/proxy-server-base.conf
@@ -13,7 +13,6 @@ proxy_set_header X-Forwarded-For $proxy_protocol_addr;
 proxy_set_header X-Forwarded-Proto $scheme;
 proxy_set_header Host $http_host;
 proxy_redirect off;
-proxy_buffer_size 6m;
 
 proxy_set_header Transfer-Encoding $http_transfer_encoding;
 
diff --git a/conf/server-base.conf b/conf/server-base.conf
index 6ac4dfb28..d5b211c52 100644
--- a/conf/server-base.conf
+++ b/conf/server-base.conf
@@ -16,7 +16,6 @@ proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
 proxy_set_header X-Forwarded-Proto $scheme;
 proxy_set_header Host $http_host;
 proxy_redirect off;
-proxy_buffer_size 6m;
 
 proxy_set_header Transfer-Encoding $http_transfer_encoding;