diff --git a/templates/seafile.nginx.conf.template b/templates/seafile.nginx.conf.template
index 5a7cad72..1b82b88a 100644
--- a/templates/seafile.nginx.conf.template
+++ b/templates/seafile.nginx.conf.template
@@ -45,7 +45,9 @@ server {
         proxy_set_header Host $http_host;
         proxy_set_header Forwarded "for=$remote_addr;proto=$scheme";
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header X-Forwarded-Proto $scheme;
+        if ($http_x_forwarded_proto = "") {
+            proxy_set_header X-Forwarded-Proto $scheme;
+        }
         proxy_set_header X-Real-IP $remote_addr;
         proxy_set_header Connection "";
         proxy_http_version 1.1;
@@ -88,7 +90,9 @@ server {
         proxy_set_header   X-Real-IP $remote_addr;
         proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
         proxy_set_header   X-Forwarded-Host $server_name;
-        proxy_set_header   X-Forwarded-Proto $scheme;
+        if ($http_x_forwarded_proto = "") {
+            proxy_set_header   X-Forwarded-Proto $scheme;
+        }
         proxy_read_timeout  1200s;
         client_max_body_size 0;