diff --git a/infra/nginx/configurations/ctf-manager.conf b/infra/nginx/configurations/ctf-manager.conf
index f8711e7..e9654ee 100644
--- a/infra/nginx/configurations/ctf-manager.conf
+++ b/infra/nginx/configurations/ctf-manager.conf
@@ -6,7 +6,7 @@ server {
     # deny all;
 
     # Exception for /team/*/flag
-    location ~* ^/team/.*/flag$ {
+    location ~* ^/team/[^/]+/flag/$ {
         proxy_pass http://api:80;
 
         proxy_set_header Host $host;