diff --git a/init.lua b/init.lua
index 7cf80ed..2c59938 100644
--- a/init.lua
+++ b/init.lua
@@ -246,6 +246,9 @@ minetest.register_node("teleports:teleport", {
 				local sign_meta = minetest.env:get_meta(sign_pos)
 				local sign_text = sign_meta:get_string("text")
 				local secret_name = sign_text:sub(0, 16)
+				if string.len(secret_name) == 0 then
+					secret_name = nil
+				end
 				table.insert(teleports.teleports, {pos=vector.round(pos), name=secret_name})
 			else
 				table.insert(teleports.teleports, {pos=vector.round(pos)})