--- main.go.original	2021-06-27 18:46:05.000000000 +0100
+++ main.go	2021-06-27 18:55:34.000000000 +0100
@@ -34,10 +34,7 @@
 const BUG_REPORT_URL = "https://github.com/aaronjanse/3mux/issues"
 
 func init() {
-	tmp := os.Getenv("TMPDIR")
-	if tmp == "" {
-		tmp = "/tmp"
-	}
+	const tmp = "/tmp"
 
 	threemuxDir = path.Join(tmp, "3mux")
 	os.MkdirAll(threemuxDir, 0700)