diff --git a/src/k_objects.h b/src/k_objects.h
new file mode 100644
index 000000000..45f9df78c
--- /dev/null
+++ b/src/k_objects.h
@@ -0,0 +1,11 @@
+/* object-specific code */
+#ifndef k_objects_H
+#define k_objects_H
+
+/* Hyudoro */
+void Obj_HyudoroDeploy(mobj_t *master);
+void Obj_HyudoroThink(mobj_t *actor);
+void Obj_HyudoroCenterThink(mobj_t *actor);
+void Obj_HyudoroCollide(mobj_t *special, mobj_t *toucher);
+
+#endif/*k_objects_H*/