diff --git a/d1/nginx_config.py b/d1/nginx_config.py
index 2449e26..c7939db 100644
--- a/d1/nginx_config.py
+++ b/d1/nginx_config.py
@@ -43,9 +43,23 @@ def forward(
             else:
                 server_name = 'default_server'
 
-            if not server_name in sections:
+            if (
+                not server_name in sections
+            ):
                 sections[server_name] = []
 
+                if 'client_max_body_size' in entry:
+                    client_max_body_size = entry['client_max_body_size']
+                else:
+                    client_max_body_size = '50M'
+
+                assert isinstance(client_max_body_size, str)
+
+                sections[server_name].append(
+                    r'''
+  client_max_body_size %s;
+                    ''' % client_max_body_size
+                )
 
             location_get = lambda location_body, location_path2, prefix=None,: (
                 r'''
@@ -138,7 +152,7 @@ server {
 
   server_name {server_name};
   listen 80 {default_server};
-  client_max_body_size 50M;
+  #client_max_body_size 50M;
 
   {sections_config}
 }