diff --git a/lib/strings.nix b/lib/strings.nix
index efdc265465f..31b0f56e09b 100644
--- a/lib/strings.nix
+++ b/lib/strings.nix
@@ -34,6 +34,9 @@ rec {
   concatStringsSep = separator: list:
     concatStrings (intersperse separator list);
 
+  concatMapStringsSep = sep: f: list: concatStringsSep sep (map f list);
+  concatImapStringsSep = sep: f: list: concatStringsSep sep (lib.imap f list);
+
 
   # Construct a Unix-style search path consisting of each `subDir"
   # directory of the given list of packages.  For example,
diff --git a/nixos/modules/services/web-servers/apache-httpd/mediawiki.nix b/nixos/modules/services/web-servers/apache-httpd/mediawiki.nix
index aa9aec87f0c..76c64f8cb29 100644
--- a/nixos/modules/services/web-servers/apache-httpd/mediawiki.nix
+++ b/nixos/modules/services/web-servers/apache-httpd/mediawiki.nix
@@ -133,6 +133,7 @@ in
         RewriteEngine On
         RewriteCond %{DOCUMENT_ROOT}%{REQUEST_URI} !-f
         RewriteCond %{DOCUMENT_ROOT}%{REQUEST_URI} !-d
+        ${concatMapStringsSep "\n" (u: "RewriteCond %{REQUEST_URI} !^${u.urlPath}") serverInfo.serverConfig.servedDirs}
         RewriteRule ${if config.enableUploads
           then "!^/images"
           else "^.*\$"