diff --git a/nixos/modules/services/web-apps/nextcloud.nix b/nixos/modules/services/web-apps/nextcloud.nix
index 29fa373044ce..cd825ee70287 100644
--- a/nixos/modules/services/web-apps/nextcloud.nix
+++ b/nixos/modules/services/web-apps/nextcloud.nix
@@ -387,7 +387,7 @@ in {
           possible, but an upgrade from 18 to 19).
         '')
         ++ (optional (versionOlder cfg.package.version "21") ''
-          The latest Nextcloud release is v20 which can be installed by setting
+          The latest Nextcloud release is v21 which can be installed by setting
           `services.nextcloud.package` to `pkgs.nextcloud21`. Please note that if you're
           on `pkgs.nextcloud19`, you'll have to install `pkgs.nextcloud20` first.
         '');
diff --git a/nixos/modules/services/web-apps/nextcloud.xml b/nixos/modules/services/web-apps/nextcloud.xml
index e1a53f629196..45f34073fc0a 100644
--- a/nixos/modules/services/web-apps/nextcloud.xml
+++ b/nixos/modules/services/web-apps/nextcloud.xml
@@ -12,7 +12,8 @@
  </para>
  <para>
   The current default by NixOS is <package>nextcloud19</package> though it's recommended
-  to upgrade to the latest version, <package>nextcloud21</package>.
+  to upgrade to the latest version, <package>nextcloud21</package>. Please note that it's necessary
+  to install <package>nextcloud20</package> first!
  </para>
  <section xml:id="module-services-nextcloud-basic-usage">
   <title>Basic usage</title>