diff -uNr busybox-1.30.1/util-linux/setarch.c busybox-1.30.1.mod/util-linux/setarch.c
--- busybox-1.30.1/util-linux/setarch.c	2018-12-30 17:14:20.000000000 +0200
+++ busybox-1.30.1.mod/util-linux/setarch.c	2019-03-02 14:06:38.150442254 +0200
@@ -98,7 +98,7 @@
 
 	argv += optind;
 	if (!argv[0])
-		(--argv)[0] = (char*)"/bin/sh";
+		(--argv)[0] = (char*)"@TERMUX_PREFIX@/bin/sh";
 
 	/* Try to execute the program */
 	BB_EXECVP_or_die(argv);