diff --git a/2configs/bgt/download.binaergewitter.de.nix b/2configs/bgt/download.binaergewitter.de.nix
index 4abc7d3..6ce0606 100644
--- a/2configs/bgt/download.binaergewitter.de.nix
+++ b/2configs/bgt/download.binaergewitter.de.nix
@@ -22,6 +22,7 @@ in {
     uid = genid "auphonic";
     group = "nginx";
     useDefaultShell = true;
+    isSystemUser = true;
     openssh.authorizedKeys.keys = [ ident config.krebs.users.makefu.pubkey ];
   };
 
diff --git a/2configs/dcpp/hub.nix b/2configs/dcpp/hub.nix
index fbbce1f..d9a2869 100644
--- a/2configs/dcpp/hub.nix
+++ b/2configs/dcpp/hub.nix
@@ -33,10 +33,11 @@ let
   uhubDir = "/var/lib/uhub";
 
 in {
-  users.extraUsers."${ddclientUser}" = {
+  users.users."${ddclientUser}" = {
     uid = genid "ddclient";
     description = "ddclient daemon user";
     home = stateDir;
+    isSystemUser = true;
     createHome = true;
   };
 
diff --git a/2configs/nsupdate-data.nix b/2configs/nsupdate-data.nix
index cfa6193..2f8f4ac 100644
--- a/2configs/nsupdate-data.nix
+++ b/2configs/nsupdate-data.nix
@@ -34,6 +34,7 @@ in {
     description = "ddclient daemon user";
     home = stateDir;
     createHome = true;
+    isSystemUser = true;
   };
 
   systemd.services = {