diff --git a/nixos/tests/web-servers/unit-php.nix b/nixos/tests/web-servers/unit-php.nix
index 24d6f5f16a7..c4e89f069f1 100644
--- a/nixos/tests/web-servers/unit-php.nix
+++ b/nixos/tests/web-servers/unit-php.nix
@@ -34,7 +34,7 @@ in {
     };
     users = {
       users.testuser = {
-        isNormalUser = false;
+        isSystemUser = true;
         uid = 1074;
         group = "testgroup";
       };