diff --git a/mods/ITEMS/mcl_core/nodes_liquid.lua b/mods/ITEMS/mcl_core/nodes_liquid.lua
index ac938c80..77913225 100644
--- a/mods/ITEMS/mcl_core/nodes_liquid.lua
+++ b/mods/ITEMS/mcl_core/nodes_liquid.lua
@@ -33,6 +33,7 @@ minetest.register_node("mcl_core:water_flowing", {
 		},
 	},
 	sounds = mcl_sounds.node_sound_water_defaults(),
+	is_ground_content = false,
 	alpha = WATER_ALPHA,
 	paramtype = "light",
 	paramtype2 = "flowingliquid",
@@ -77,6 +78,7 @@ S("• When water is directly below lava, the water turns into stone."),
 		}
 	},
 	sounds = mcl_sounds.node_sound_water_defaults(),
+	is_ground_content = false,
 	alpha = WATER_ALPHA,
 	paramtype = "light",
 	walkable = false,
@@ -119,6 +121,7 @@ minetest.register_node("mcl_core:lava_flowing", {
 	paramtype = "light",
 	paramtype2 = "flowingliquid",
 	light_source = minetest.LIGHT_MAX,
+	is_ground_content = false,
 	sounds = mcl_sounds.node_sound_lava_defaults(),
 	walkable = false,
 	pointable = false,
@@ -176,6 +179,7 @@ S("• When lava is directly above water, the water turns into stone."),
 	},
 	paramtype = "light",
 	light_source = minetest.LIGHT_MAX,
+	is_ground_content = false,
 	sounds = mcl_sounds.node_sound_lava_defaults(),
 	walkable = false,
 	pointable = false,