diff --git a/modules/nixos/programs/gnome-session/default.nix b/modules/nixos/programs/gnome-session/default.nix
index 2afdbd94..53ed27fb 100644
--- a/modules/nixos/programs/gnome-session/default.nix
+++ b/modules/nixos/programs/gnome-session/default.nix
@@ -144,6 +144,7 @@ in
       type = with lib.types; attrsOf (submoduleWith {
         specialArgs = { inherit utils glibKeyfileFormat pkgs; };
         modules = [ ./submodules/session-type.nix ];
+        shorthandOnlyDefinesConfig = true;
       });
       description = ''
         A set of desktop sessions to be created with
diff --git a/modules/nixos/programs/gnome-session/submodules/session-type.nix b/modules/nixos/programs/gnome-session/submodules/session-type.nix
index f87c5198..7a0a1d57 100644
--- a/modules/nixos/programs/gnome-session/submodules/session-type.nix
+++ b/modules/nixos/programs/gnome-session/submodules/session-type.nix
@@ -98,6 +98,7 @@ in
           };
         };
         modules = [ ./component-type.nix ];
+        shorthandOnlyDefinesConfig = true;
       });
       description = ''
         The individual components to be launched with the desktop session.