diff --git a/leenkx/Sources/iron/system/LnxPack.hx b/leenkx/Sources/iron/system/LnxPack.hx
index cb2dd39..32d4668 100644
--- a/leenkx/Sources/iron/system/LnxPack.hx
+++ b/leenkx/Sources/iron/system/LnxPack.hx
@@ -160,6 +160,7 @@ class LnxPack {
 			case "anim": TAnimation;
 			case "tracks": TTrack;
 			case "morph_target": TMorphTarget;
+			case "vertex_groups": TVertex_groups;
 			case _: TSceneFormat;
 		}
 	}