diff --git a/util/OpenOS/config.d/02_plan9k.lua b/util/OpenOS/config.d/02_plan9k.lua
new file mode 100644
index 0000000..190da4c
--- /dev/null
+++ b/util/OpenOS/config.d/02_plan9k.lua
@@ -0,0 +1,12 @@
+local cfgadd = ...
+local comp = require("component")
+for fs in comp.list("filesystem") do
+	if comp.invoke(fs, "getLabel") == "Plan9k" and comp.invoke(fs, "exists", "init.lua") then
+		print("Plan9k discovered on "..fs)
+		cfgadd(string.format([[
+menu.add("Plan9k on %s", function()
+	return loadmod("loader_openos")("%s")
+end)
+]], fs:sub(1, 3), fs))
+	end
+end
\ No newline at end of file
diff --git a/utils/selfextract.lua b/utils/selfextract.lua
index 29d76e8..0a60787 100644
--- a/utils/selfextract.lua
+++ b/utils/selfextract.lua
@@ -124,7 +124,7 @@ end
 local lname = ""
 while lname ~= "TRAILER!!!" do
 	local dat = read(22)
-	local e = read_header(dat)
+	local e = assert(read_header(dat))
 	e.name = read(e.namesize)
 	e.pos = seek(e.namesize & 1)
 	seek(e.filesize + (e.filesize & 1))
@@ -143,4 +143,4 @@ for i=1, #tbl do
 	end
 end
 
-error("Init not found.")
\ No newline at end of file
+error("Init not found.")