diff -uNr mksh/sh.h mksh.mod/sh.h
--- mksh/sh.h	2018-01-14 03:48:03.000000000 +0200
+++ mksh.mod/sh.h	2019-02-26 00:23:47.223523334 +0200
@@ -420,7 +420,7 @@
 #ifdef __OS2__
 #define MKSH_UNIXROOT	"/@unixroot"
 #else
-#define MKSH_UNIXROOT	""
+#define MKSH_UNIXROOT	"@TERMUX_PREFIX@"
 #endif
 
 #ifdef MKSH_DOSPATH
