diff --git a/nixos/modules/services/web-servers/apache-httpd/default.nix b/nixos/modules/services/web-servers/apache-httpd/default.nix
index 1f0729c1b715..5adfb8f0f96a 100644
--- a/nixos/modules/services/web-servers/apache-httpd/default.nix
+++ b/nixos/modules/services/web-servers/apache-httpd/default.nix
@@ -98,6 +98,9 @@ let
       # Authorization: is the user allowed access?
       "authz_user" "authz_groupfile" "authz_host"
 
+      # For compatibility with old configurations, the new module mod_access_compat is provided.
+      (if version24 then "access_compat" else "")
+
       # Other modules.
       "ext_filter" "include" "log_config" "env" "mime_magic"
       "cern_meta" "expires" "headers" "usertrack" /* "unique_id" */ "setenvif"