diff -uNr renameutils-0.12.0/src/common/io-utils.c renameutils-0.12.0.mod/src/common/io-utils.c
--- renameutils-0.12.0/src/common/io-utils.c	2008-09-21 12:11:38.000000000 +0300
+++ renameutils-0.12.0.mod/src/common/io-utils.c	2020-01-02 21:05:14.564767978 +0200
@@ -183,7 +183,7 @@
 		if (tmpdir == NULL)
 			tmpdir = P_tmpdir;
 		if (tmpdir == NULL)
-			tmpdir = "/tmp";
+			tmpdir = "@TERMUX_PREFIX@/tmp";
 		name = xasprintf("%s/%sXXXXXX", tmpdir, base);
 	} else {
 		name = xasprintf("%sXXXXXX", base);