diff --git a/mods/ITEMS/mcl_signs/init.lua b/mods/ITEMS/mcl_signs/init.lua
index 403b53ef84..e724def68c 100644
--- a/mods/ITEMS/mcl_signs/init.lua
+++ b/mods/ITEMS/mcl_signs/init.lua
@@ -125,9 +125,11 @@ mcl_signs.register_sign_craft("mcl_core", "mcl_core:junglewood", "_junglewood")
 mcl_signs.register_sign("mcl_core", "#ea7479", "_acaciawood", "Acacia Sign")
 mcl_signs.register_sign_craft("mcl_core", "mcl_core:acaciawood", "_acaciawood")
 
--- mangrove_wood Sign  "#c7545c"
-mcl_signs.register_sign("mcl_core", "#b8693d", "_mangrove_wood", "Mangrove Sign")
-mcl_signs.register_sign_craft("mcl_core", "mcl_core:mangrove_wood", "_mangrove_wood")
+if minetest.get_modpath("mcl_mangrove") then
+	-- mangrove_wood Sign  "#c7545c"
+	mcl_signs.register_sign("mcl_mangrove", "#b8693d", "_mangrove_wood", "Mangrove Sign")
+	mcl_signs.register_sign_craft("mcl_mangrove", "mcl_mangrove:mangrove_wood", "_mangrove_wood")
+end
 
 -- add in the nether wood signs
 if minetest.get_modpath("mcl_crimson") then
diff --git a/mods/ITEMS/mcl_signs/signs_api.lua b/mods/ITEMS/mcl_signs/signs_api.lua
index 666b510209..1f7369ba3c 100644
--- a/mods/ITEMS/mcl_signs/signs_api.lua
+++ b/mods/ITEMS/mcl_signs/signs_api.lua
@@ -1465,7 +1465,7 @@ function mcl_signs.register_sign_craft(modname, wood_item_string, _name)
 
 	minetest.register_craft({
 		type = "fuel",
-		recipe = ":mcl_signs:wall_sign" .. _name,
+		recipe = "mcl_signs:wall_sign" .. _name,
 		burntime = 10,
 	})
 
@@ -1477,7 +1477,7 @@ function mcl_signs.register_sign_craft(modname, wood_item_string, _name)
 	-- register crafts (actual recipe)
 	if minetest.get_modpath(modname) then
 
-		local itemstring = ":mcl_signs:wall_sign"
+		local itemstring = "mcl_signs:wall_sign"
 
 		minetest.register_craft({
 			output = itemstring .. _name .. " 3",