diff --git a/modules/system-types/depthcharge.nix b/modules/system-types/depthcharge.nix
index 7e1d26d8..d6df720a 100644
--- a/modules/system-types/depthcharge.nix
+++ b/modules/system-types/depthcharge.nix
@@ -17,6 +17,7 @@ in
     (lib.mkIf enabled {
       system.build = {
         inherit (build) disk-image kpart;
+        default = build.disk-image;
         # installer shortcut; it's a depthcharge disk-image build.
         mobile-installer = build.disk-image;
       };