diff --git a/data/common/File Managers/fNav/Tupfile.lua b/data/common/File Managers/fNav/Tupfile.lua
index eefde80919..31cc59818c 100644
--- a/data/common/File Managers/fNav/Tupfile.lua	
+++ b/data/common/File Managers/fNav/Tupfile.lua	
@@ -1 +1,3 @@
-tup.rule("ABOUT.TXT", "kpack %f %o", "ABOUT.TXT.KPACK")
+if tup.getconfig("NO_FASM") ~= "" then return end
+tup.rule("ABOUT.TXT", "fasm %f %o " .. tup.getconfig("KPACK_CMD"), "ABOUT.TXT")
+