diff --git a/nixos/modules/security/acme.nix b/nixos/modules/security/acme.nix
index 6b62e5043ca..c33a92580d4 100644
--- a/nixos/modules/security/acme.nix
+++ b/nixos/modules/security/acme.nix
@@ -346,7 +346,7 @@ let
       webroot = mkOption {
         type = types.nullOr types.str;
         default = null;
-        example = "/var/lib/acme/acme-challenges";
+        example = "/var/lib/acme/acme-challenge";
         description = ''
           Where the webroot of the HTTP vhost is located.
           <filename>.well-known/acme-challenge/</filename> directory
@@ -579,12 +579,12 @@ in {
         example = literalExample ''
           {
             "example.com" = {
-              webroot = "/var/www/challenges/";
+              webroot = "/var/lib/acme/acme-challenge/";
               email = "foo@example.com";
               extraDomainNames = [ "www.example.com" "foo.example.com" ];
             };
             "bar.example.com" = {
-              webroot = "/var/www/challenges/";
+              webroot = "/var/lib/acme/acme-challenge/";
               email = "bar@example.com";
             };
           }
diff --git a/nixos/modules/services/web-servers/apache-httpd/vhost-options.nix b/nixos/modules/services/web-servers/apache-httpd/vhost-options.nix
index 173c0f8561c..394f9a30554 100644
--- a/nixos/modules/services/web-servers/apache-httpd/vhost-options.nix
+++ b/nixos/modules/services/web-servers/apache-httpd/vhost-options.nix
@@ -112,7 +112,7 @@ in
 
     acmeRoot = mkOption {
       type = types.str;
-      default = "/var/lib/acme/acme-challenges";
+      default = "/var/lib/acme/acme-challenge";
       description = "Directory for the acme challenge which is PUBLIC, don't put certs or keys in here";
     };