diff --git a/hosts/hedgedoc/default.nix b/hosts/hedgedoc/default.nix
index 2dbfbc94..6285e3af 100644
--- a/hosts/hedgedoc/default.nix
+++ b/hosts/hedgedoc/default.nix
@@ -12,7 +12,10 @@
 
     hedgedoc = {
       enable = true;
-      ldap.enable = true;
+      ldap = {
+        enable = true;
+        userFilterGroup = "hedgedoc-users";
+      };
       settings = {
         allowAnonymousEdits = true;
         allowFreeURL = true;