diff --git a/mods/ENTITIES/mobs_mc/slime+magma_cube.lua b/mods/ENTITIES/mobs_mc/slime+magma_cube.lua
index ed876ef47e..56628d0283 100644
--- a/mods/ENTITIES/mobs_mc/slime+magma_cube.lua
+++ b/mods/ENTITIES/mobs_mc/slime+magma_cube.lua
@@ -199,6 +199,7 @@ mcl_mobs:spawn_specific(
 "JungleM_underground",
 "ExtremeHillsM_underground",
 "JungleEdgeM_underground",
+"MangroveSwamp_underground",
 },
 0,
 minetest.LIGHT_MAX+1,
@@ -243,6 +244,7 @@ mcl_mobs:spawn_specific(
 "JungleM_underground",
 "ExtremeHillsM_underground",
 "JungleEdgeM_underground",
+"MangroveSwamp_underground",
 },
 0,
 minetest.LIGHT_MAX+1,
@@ -287,6 +289,7 @@ mcl_mobs:spawn_specific(
 "JungleM_underground",
 "ExtremeHillsM_underground",
 "JungleEdgeM_underground",
+"MangroveSwamp_underground",
 },
 0,
 minetest.LIGHT_MAX+1,