--- a/mandocdb.c
+++ b/mandocdb.c
@@ -2203,7 +2203,7 @@
 dbwrite(struct dba *dba)
 {
 	struct stat	 sb1, sb2;
-	char		 tfn[33], *cp1, *cp2;
+	char		 tfn[sizeof("@TERMUX_PREFIX@/tmp/mandocdb.XXXXXXXX")], *cp1, *cp2;
 	off_t		 i;
 	int		 fd1, fd2;
 
@@ -2238,7 +2238,7 @@
 	 * file, but let's at least check whether the data changed.
 	 */
 
-	(void)strlcpy(tfn, "/tmp/mandocdb.XXXXXXXX", sizeof(tfn));
+	(void)strlcpy(tfn, "@TERMUX_PREFIX@/tmp/mandocdb.XXXXXXXX", sizeof(tfn));
 	if (mkdtemp(tfn) == NULL) {
 		exitcode = (int)MANDOCLEVEL_SYSERR;
 		say("", "&%s", tfn);