diff --git a/nixos/modules/services/monitoring/grafana.nix b/nixos/modules/services/monitoring/grafana.nix
index 9aad9e21fa6e..46da20bec8ad 100644
--- a/nixos/modules/services/monitoring/grafana.nix
+++ b/nixos/modules/services/monitoring/grafana.nix
@@ -126,7 +126,7 @@ let
       '';
 
   # Get a submodule without any embedded metadata:
-  _filter = x: filterAttrs (k: v: k != "_module") x;
+  _filter = x: removeAttrs x [ "_module" ];
 
   # https://grafana.com/docs/grafana/latest/administration/provisioning/#datasources
   grafanaTypes.datasourceConfig = types.submodule {