@@ -416,9 +416,9 @@
 		'default_desert_stone.png';
 		'default_cloud.png';
 	};
 	groups = {
-		choppy = 2, oddly_breakable_by_hand = 2;
+		choppy = 2, dig_immediate = 2;
 		sorcery_tech = 1;
 		flammable = 2;
 	};
 	on_construct = function(pos)