diff --git a/ldoc.lua b/ldoc.lua
index de09e68..2b2b3ae 100644
--- a/ldoc.lua
+++ b/ldoc.lua
@@ -774,7 +774,8 @@ end
 local builtin_style, builtin_template = match_bang(args.style),match_bang(args.template)
 if builtin_style or builtin_template then
    -- '!' here means 'use built-in templates'
-   local tmpdir = path.join(path.is_windows and os.getenv('TMP') or '/tmp','ldoc')
+   local user = path.expanduser('~'):gsub('[/\\ ]','_')
+   local tmpdir = path.join(path.is_windows and os.getenv('TMP') or '/tmp','ldoc'..user)
    if not path.isdir(tmpdir) then
       lfs.mkdir(tmpdir)
    end