diff --git a/modules/lib/fs.lua b/modules/lib/fs.lua
index 4c15934..23500dc 100644
--- a/modules/lib/fs.lua
+++ b/modules/lib/fs.lua
@@ -18,6 +18,7 @@ do
  end
  local function canread(fn)
   fn = fs.canonical(fn)
+  if os.getuid() == "nobody" then return false end
   if os.getuid() ~= "superuser" and fsattr[fn] then
    if not parseacl(fsattr[fn].read or "")[os.getuid()] then return false end
   end
@@ -25,6 +26,7 @@ do
  end
  local function canwrite(fn)
   fn = fs.canonical(fn)
+  if os.getuid() == "nobody" then return false end
   if os.getuid() ~= "superuser" and fsattr[fn] then
    if not parseacl(fsattr[fn].write)[os.getuid()] then return false end
   end