diff --git a/programs/games/21days/Tupfile.lua b/programs/games/21days/Tupfile.lua
index 7655c042d9..9cf9c5b472 100755
--- a/programs/games/21days/Tupfile.lua
+++ b/programs/games/21days/Tupfile.lua
@@ -1,5 +1,5 @@
 if tup.getconfig("NO_GCC") ~= "" then return end
-HELPERDIR = (tup.getconfig("HELPERDIR") == "") and "../../.." or tup.getconfig("HELPERDIR")
+HELPERDIR = (tup.getconfig("HELPERDIR") == "") and "../.." or tup.getconfig("HELPERDIR")
 tup.include(HELPERDIR .. "/use_gcc.lua")
 tup.include(HELPERDIR .. "/use_menuetlibc.lua")
 CFLAGS = CFLAGS .. " -D _KOS32 "