diff --git a/morelights/init.lua b/morelights/init.lua
index 7941d47..faa7296 100644
--- a/morelights/init.lua
+++ b/morelights/init.lua
@@ -7,6 +7,8 @@ function morelights.register_variants(variants, fixedDef)
         local name = variant.name
         local def = table.copy(fixedDef)
 
+        def.is_ground_content = def.is_ground_content == true
+
         for k, v in pairs(variant) do
             if k ~= "name" then
                 def[k] = v
diff --git a/morelights_extras/init.lua b/morelights_extras/init.lua
index 741d1a2..b596844 100644
--- a/morelights_extras/init.lua
+++ b/morelights_extras/init.lua
@@ -7,6 +7,7 @@ minetest.register_node("morelights_extras:f_block", {
     paramtype = "light",
     light_source = minetest.LIGHT_MAX,
     groups = {cracky = 2, oddly_breakable_by_hand = 3, handy = 1},
+    is_ground_content = false,
     _mcl_hardness = 0.3,
     sounds = morelights.sounds.glass
 })
@@ -27,6 +28,7 @@ do
             handy = 1,
             soil = 1,
         },
+        is_ground_content = false,
         _mcl_hardness = 0.3,
         sounds = morelights.sounds.glass
     }
@@ -110,6 +112,7 @@ do
         paramtype = "light",
         light_source = 12,
         groups = {cracky = 2, oddly_breakable_by_hand = 3, handy = 1},
+        is_ground_content = false,
         _mcl_hardness = 0.3,
         sounds = morelights.sounds.glass
     })
@@ -129,6 +132,7 @@ do
         paramtype = "light",
         light_source = 12,
         groups = {cracky = 2, oddly_breakable_by_hand = 3, handy = 1},
+        is_ground_content = false,
         _mcl_hardness = 0.3,
         sounds = morelights.sounds.glass
     })
@@ -157,6 +161,7 @@ minetest.register_node("morelights_extras:stairlight", {
     sunlight_propagates = true,
     groups = {cracky = 2, oddly_breakable_by_hand = 3, handy = 1,
               attached_node = 1},
+    is_ground_content = false,
     _mcl_hardness = 0.15,
     node_placement_prediction = "",
     sounds = morelights.sounds.glass,
diff --git a/morelights_modern/init.lua b/morelights_modern/init.lua
index 02d67be..e23a9b0 100644
--- a/morelights_modern/init.lua
+++ b/morelights_modern/init.lua
@@ -7,6 +7,7 @@ minetest.register_node("morelights_modern:block", {
     paramtype = "light",
     light_source = minetest.LIGHT_MAX,
     groups = {cracky = 2, oddly_breakable_by_hand = 3, handy = 1},
+    is_ground_content = false,
     _mcl_hardness = 0.3,
     sounds = morelights.sounds.glass
 })
@@ -29,6 +30,7 @@ minetest.register_node("morelights_modern:smallblock", {
     sunlight_propagates = true,
     light_source = 12,
     groups = {cracky = 3, oddly_breakable_by_hand = 3, handy = 1},
+    is_ground_content = false,
     _mcl_hardness = 0.2,
     sounds = morelights.sounds.glass,
 
@@ -132,6 +134,7 @@ minetest.register_node("morelights_modern:barlight_c", {
     sunlight_propagates = true,
     light_source = minetest.LIGHT_MAX,
     groups = {cracky = 2, oddly_breakable_by_hand = 3, handy = 1, not_blocking_trains = 1},
+    is_ground_content = false,
     _mcl_hardness = 0.15,
     sounds = morelights.sounds.glass
 })
@@ -154,6 +157,7 @@ minetest.register_node("morelights_modern:barlight_s", {
     sunlight_propagates = true,
     light_source = minetest.LIGHT_MAX,
     groups = {cracky = 2, oddly_breakable_by_hand = 3, handy = 1, not_blocking_trains = 1},
+    is_ground_content = false,
     _mcl_hardness = 0.15,
     sounds = morelights.sounds.glass
 })
@@ -174,6 +178,7 @@ minetest.register_node("morelights_modern:ceilinglight", {
     sunlight_propagates = true,
     light_source = minetest.LIGHT_MAX,
     groups = {cracky = 3, oddly_breakable_by_hand = 3, handy = 1, not_blocking_trains = 1},
+    is_ground_content = false,
     _mcl_hardness = 0.2,
     sounds = morelights.sounds.glass,
 
@@ -232,6 +237,7 @@ minetest.register_node("morelights_modern:walllamp", {
     sunlight_propagates = true,
     light_source = 12,
     groups = {cracky = 2, oddly_breakable_by_hand = 3, handy = 1},
+    is_ground_content = false,
     _mcl_hardness = 0.2,
     sounds = morelights.sounds.glass,
 
diff --git a/morelights_vintage/init.lua b/morelights_vintage/init.lua
index 545637f..bb2d288 100644
--- a/morelights_vintage/init.lua
+++ b/morelights_vintage/init.lua
@@ -39,6 +39,7 @@ minetest.register_node("morelights_vintage:chain_b", {
     sunlight_propagates = true,
     groups = {cracky = 3, oddly_breakable_by_hand = 3, handy = 1,
               mounted_ceiling = 1},
+    is_ground_content = false,
     _mcl_hardness = 0.2,
     sounds = morelights.sounds.metal,
 
@@ -71,6 +72,7 @@ minetest.register_node("morelights_vintage:chain_ceiling_b", {
     sunlight_propagates = true,
     groups = {cracky = 3, oddly_breakable_by_hand = 3, handy = 1,
               mounted_ceiling = 1, mounted_ceiling = 1},
+    is_ground_content = false,
     _mcl_hardness = 0.2,
     sounds = morelights.sounds.metal
 })
@@ -81,6 +83,7 @@ minetest.register_node("morelights_vintage:block", {
     paramtype = "light",
     light_source = minetest.LIGHT_MAX,
     groups = {cracky = 2, oddly_breakable_by_hand = 3, handy = 1},
+    is_ground_content = false,
     _mcl_hardness = 0.3,
     sounds = morelights.sounds.glass
 })
@@ -104,6 +107,7 @@ minetest.register_node("morelights_vintage:smallblock", {
     sunlight_propagates = true,
     light_source = 12,
     groups = {cracky = 2, oddly_breakable_by_hand = 3, handy = 1},
+    is_ground_content = false,
     _mcl_hardness = 0.2,
     sounds = morelights.sounds.glass,
 
@@ -133,6 +137,7 @@ minetest.register_node("morelights_vintage:lantern_f", {
     sunlight_propagates = true,
     light_source = 12,
     groups = {cracky = 2, oddly_breakable_by_hand = 3, handy = 1},
+    is_ground_content = false,
     _mcl_hardness = 0.2,
     sounds = morelights.sounds.glass,
 
@@ -177,6 +182,7 @@ minetest.register_node("morelights_vintage:lantern_c", {
     light_source = 12,
     groups = {cracky = 2, oddly_breakable_by_hand = 3, handy = 1,
               not_in_creative_inventory = 1},
+    is_ground_content = false,
     _mcl_hardness = 0.2,
     sounds = morelights.sounds.glass,
     drop = "morelights_vintage:lantern_f"
@@ -204,6 +210,7 @@ minetest.register_node("morelights_vintage:lantern_w", {
     light_source = 12,
     groups = {cracky = 2, oddly_breakable_by_hand = 3, handy = 1,
               not_in_creative_inventory = 1},
+    is_ground_content = false,
     _mcl_hardness = 0.2,
     sounds = morelights.sounds.glass,
     drop = "morelights_vintage:lantern_f"
@@ -232,6 +239,7 @@ minetest.register_node("morelights_vintage:hangingbulb", {
     sunlight_propagates = true,
     light_source = 10,
     groups = {cracky = 2, oddly_breakable_by_hand = 3, handy = 1},
+    is_ground_content = false,
     _mcl_hardness = 0.15,
     sounds = morelights.sounds.glass
 })
@@ -266,6 +274,7 @@ minetest.register_node("morelights_vintage:oillamp", {
     sunlight_propagates = true,
     light_source = 8,
     groups = {cracky = 2, oddly_breakable_by_hand = 3, handy = 1},
+    is_ground_content = false,
     _mcl_hardness = 0.2,
     sounds = morelights.sounds.glass
 })
@@ -291,6 +300,7 @@ minetest.register_node("morelights_vintage:chandelier", {
     sunlight_propagates = true,
     light_source = 10,
     groups = {cracky = 2, oddly_breakable_by_hand = 3, handy = 1},
+    is_ground_content = false,
     _mcl_hardness = 0.3,
     sounds = morelights.sounds.glass
 })