diff --git a/nixos/modules/services/monitoring/collectd.nix b/nixos/modules/services/monitoring/collectd.nix
index 6af04d22f0f7..660d108587de 100644
--- a/nixos/modules/services/monitoring/collectd.nix
+++ b/nixos/modules/services/monitoring/collectd.nix
@@ -132,7 +132,12 @@ in {
     users.users = optionalAttrs (cfg.user == "collectd") {
       collectd = {
         isSystemUser = true;
+        group = "collectd";
       };
     };
+
+    users.groups = optionalAttrs (cfg.user == "collectd") {
+      collectd = {};
+    };
   };
 }