diff --git a/border.lua b/border.lua
index 32c5846..a259e87 100644
--- a/border.lua
+++ b/border.lua
@@ -30,6 +30,7 @@ minetest.register_node("mapserver:border", {
 		"mapserver_border.png"
 	},
 	groups = {cracky=3,oddly_breakable_by_hand=3,handy=1},
+	is_ground_content = false,
 	sounds = moditems.sound_glass(),
 	can_dig = mapserver.can_interact,
 	after_place_node = mapserver.after_place_node,
diff --git a/label.lua b/label.lua
index c2f6d97..9476bcf 100644
--- a/label.lua
+++ b/label.lua
@@ -32,6 +32,7 @@ minetest.register_node("mapserver:label", {
 		"mapserver_label.png"
 	},
 	groups = {cracky=3,oddly_breakable_by_hand=3,handy=1},
+	is_ground_content = false,
 	sounds = moditems.sound_glass(),
 	can_dig = mapserver.can_interact,
 	after_place_node = mapserver.after_place_node,
diff --git a/poi.lua b/poi.lua
index cee4309..d2f69fb 100644
--- a/poi.lua
+++ b/poi.lua
@@ -47,6 +47,7 @@ local register_poi = function(color, dye)
 			"[combine:16x16:0,0=mapserver_gold_block.png:3,2=mapserver_poi_" .. color .. ".png"
 		},
 		groups = {cracky=3,oddly_breakable_by_hand=3,handy=1},
+		is_ground_content = false,
 		sounds = moditems.sound_glass(),
 		can_dig = mapserver.can_interact,
 		after_place_node = mapserver.after_place_node,
diff --git a/train.lua b/train.lua
index a1df2b0..cbdf3c1 100644
--- a/train.lua
+++ b/train.lua
@@ -32,6 +32,7 @@ minetest.register_node("mapserver:train", {
 		"mapserver_train.png"
 	},
 	groups = {cracky=3,oddly_breakable_by_hand=3,handy=1},
+	is_ground_content = false,
 	sounds = moditems.sound_glass(),
 	can_dig = mapserver.can_interact,
 	_mcl_blast_resistance = 1,