diff --git a/node.lua b/node.lua
index faeb4d6..5e4eb88 100644
--- a/node.lua
+++ b/node.lua
@@ -10,7 +10,7 @@ minetest.register_node("calendar:calendar", {
 	paramtype2 = "wallmounted",
 	is_ground_content = false,
 	walkable = false,
-	groups = { dig_immediate = 2, attached_node = 1, },
+	groups = { dig_immediate = 3, attached_node = 1, },
 	selection_box = {
 		type = "wallmounted",
 	},