diff --git a/build/run/installer.sh b/build/run/installer.sh
index 8a613fd..aeefb15 100755
--- a/build/run/installer.sh
+++ b/build/run/installer.sh
@@ -424,8 +424,8 @@ server {
     root /usr/share/webapps/roundcube;
 
     # Add trailing slash to URI
-    location ~ ^(.+[^/])$ {
-        return 301 $scheme://$host$1/;
+    location /admin {
+        return 302 $scheme://$host/admin/;
     }
 
     # Postfixadmin