diff --git a/crosbot_map/include/crosbot_map/tag.hpp b/crosbot_map/include/crosbot_map/tag.hpp
index e33b108c46118242fb1418d66e86e2600a0f3baa..838354403f0c52edec8b68eae4d0a073e2594a07 100644
--- a/crosbot_map/include/crosbot_map/tag.hpp
+++ b/crosbot_map/include/crosbot_map/tag.hpp
@@ -71,6 +71,7 @@ public:
 		VICTIM      = 0,
 		LANDMARK    = 1,
 		SCAN        = 2,
+		HOLE        = 3,
 	};
 
 	/**