--- ../tmux.c.orig	2019-08-24 20:23:15.576000965 +0200
+++ ./tmux.c	2019-08-24 22:11:56.316981911 +0200
@@ -121,7 +121,7 @@
 	if ((s = getenv("TMUX_TMPDIR")) != NULL && *s != '\0')
 		xasprintf(&base, "%s/tmux-%ld", s, (long)uid);
 	else
-		xasprintf(&base, "%s/tmux-%ld", _PATH_TMP, (long)uid);
+		xasprintf(&base, "%s/tmux-%ld", "@TERMUX_PREFIX@/var/run", (long)uid);
 	if (realpath(base, resolved) == NULL &&
 	    strlcpy(resolved, base, sizeof resolved) >= sizeof resolved) {
 		errno = ERANGE;