diff --git a/minetestforfun_game/mods/default/mapgen.lua b/minetestforfun_game/mods/default/mapgen.lua
index 85de5a5d..b5bfde21 100755
--- a/minetestforfun_game/mods/default/mapgen.lua
+++ b/minetestforfun_game/mods/default/mapgen.lua
@@ -567,7 +567,7 @@ function default.register_ores()
 	local threshold = 0.08
 
 	local function register_liquid_ore(oredef)
-		neworedef = table.copy(oredef) -- Do not modify original table
+		local neworedef = table.copy(oredef) -- Do not modify original table
 		neworedef.noise_params = noise_fissure -- Fissure noise
 		neworedef.noise_threshold = threshold
 		minetest.register_ore(neworedef)