diff --git a/mods/MAPGEN/mcl_structures/ruined_portal.lua b/mods/MAPGEN/mcl_structures/ruined_portal.lua
index 618cc407bb..00d2d682c0 100644
--- a/mods/MAPGEN/mcl_structures/ruined_portal.lua
+++ b/mods/MAPGEN/mcl_structures/ruined_portal.lua
@@ -20,7 +20,7 @@ local def = {
 	y_max = mcl_vars.mg_overworld_max,
 	y_min = 1,
 	sidelen = 10,
-	y_offset = -4,
+	y_offset = -5,
 	filenames = {
 		modpath.."/schematics/mcl_structures_ruined_portal_1.mts",
 		modpath.."/schematics/mcl_structures_ruined_portal_2.mts",
diff --git a/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_1.mts b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_1.mts
index ae37576dc2..55a6f2ae30 100644
Binary files a/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_1.mts and b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_1.mts differ
diff --git a/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_2.mts b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_2.mts
index fd17f1365b..9da16e2ed3 100644
Binary files a/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_2.mts and b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_2.mts differ
diff --git a/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_99.mts b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_99.mts
index 0834d8923e..463bf19df5 100644
Binary files a/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_99.mts and b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_99.mts differ