diff --git a/sys/tools/syscalls/scripts/syscall_json.lua b/sys/tools/syscalls/scripts/syscall_json.lua
old mode 100644
new mode 100755
--- a/sys/tools/syscalls/scripts/syscall_json.lua
+++ b/sys/tools/syscalls/scripts/syscall_json.lua
@@ -5,17 +5,13 @@
 -- Copyright (c) 2026 Warner Losh <imp@bsdimp.com>
 --
 
--- Setup to be a module, or ran as its own script.
-local syscall_json = {}
-local script = not pcall(debug.getlocal, 4, 1)	-- TRUE if script.
-if script then
-	-- Add library root to the package path.
-	local path = arg[0]:gsub("/[^/]+.lua$", "")
-	package.path = package.path .. ";" .. path .. "/../?.lua"
-end
+-- Add library root to the package path.
+local path = arg[0]:gsub("/[^/]+.lua$", "")
+package.path = package.path .. ";" .. path .. "/../?.lua"
 
 local FreeBSDSyscall = require("core.freebsd-syscall")
 local ucl = require("ucl")
+local config = require("config")
 
 -- Convert the type flags set (table with flag=true entries) to a sorted list.
 local function flagsToList(typetbl)
@@ -75,52 +71,28 @@
 	return entry
 end
 
-function syscall_json.generate(tbl, config)
+function generate(tbl, config)
 	-- Build the syscalls array.
 	local syscalls = {}
 	for _, v in pairs(tbl.syscalls) do
 		table.insert(syscalls, syscallToTable(v))
 	end
 
-	-- Build the structs data into a nicer structure
-	local structs = {}
-	if tbl.structs ~= nil then
-		for k, _ in pairs(tbl.structs) do
-			table.insert(structs, k)
-		end
-		table.sort(structs)
-	end
-
-	local root = {
-		syscalls = syscalls,
-		structs = structs,
-	}
-
-	local json = ucl.to_json(root)
+	local json = ucl.to_json(syscalls)
 
 	-- Write to stdout.
 	io.write(json)
 	io.write("\n")
 end
 
--- Entry of script:
-if script then
-	local config = require("config")
-
-	if #arg < 1 or #arg > 2 then
-		error("usage: " .. arg[0] .. " syscall.master [config]")
-	end
-
-	local sysfile, configfile = arg[1], arg[2]
-
-	config.merge(configfile)
-	config.mergeCompat()
+if #arg < 1 or #arg > 2 then
+	error("usage: " .. arg[0] .. " syscall.master [config]")
+end
 
-	-- The parsed system call table.
-	local tbl = FreeBSDSyscall:new{sysfile = sysfile, config = config}
+local sysfile, configfile = arg[1], arg[2]
 
-	syscall_json.generate(tbl, config)
-end
+config.merge(configfile)
+config.mergeCompat()
 
--- Return the module.
-return syscall_json
+local tbl = FreeBSDSyscall:new{sysfile = sysfile, config = config}
+generate(tbl, config)