diff --git a/manual/server.rst b/manual/server.rst
index a805b4889c..d615e433d9 100644
--- a/manual/server.rst
+++ b/manual/server.rst
@@ -267,6 +267,10 @@ server. In this case, run the calibre server as::
 
 Now setup the virtual host in your main server, for example, for nginx::
 
+    http {
+        client_max_body_size 64M;  # needed to upload large books
+    }
+
     server {
         listen [::]:80;
         server_name myserver.example.com;
@@ -302,6 +306,10 @@ The key parameter here is ``--url-prefix /calibre``. This causes the Content ser
 
 With nginx, the required configuration is::
 
+    http {
+        client_max_body_size 64M;  # needed to upload large books
+    }
+
     proxy_set_header X-Forwarded-For $remote_addr;
     location /calibre/ {
         proxy_buffering off;