diff --git a/docker/images/files/nginx.conf.template b/docker/images/files/nginx.conf.template
index beec6ea913..0daab4b9d4 100644
--- a/docker/images/files/nginx.conf.template
+++ b/docker/images/files/nginx.conf.template
@@ -138,17 +138,17 @@ http {
         location /mcp/ws {
             proxy_set_header Upgrade $http_upgrade;
             proxy_set_header Connection 'upgrade';
-            proxy_pass http://$PENPOT_MCP_URI:4402;
+            proxy_pass $PENPOT_MCP_URI:4402;
             proxy_http_version 1.1;
         }
 
         location /mcp/stream {
-            proxy_pass http://$PENPOT_MCP_URI:4401/mcp;
+            proxy_pass $PENPOT_MCP_URI:4401/mcp;
             proxy_http_version 1.1;
         }
 
         location /mcp/sse {
-            proxy_pass http://$PENPOT_MCP_URI:4401/sse;
+            proxy_pass $PENPOT_MCP_URI:4401/sse;
             proxy_http_version 1.1;
         }