diff --git a/src/os.h b/src/os.h
index b350e43..26b075d 100644
--- a/os.h
+++ b/os.h
@@ -92,7 +92,7 @@ typedef char* slot_t;	/* used internally in utmp.c */
 #   ifdef _PATH_UTMPX
 #    define UTMPXFILE	_PATH_UTMPX
 #   else
-#    define UTMPXFILE	"/etc/utmpx"
+#    define UTMPXFILE	"@TERMUX_PREFIX@/etc/utmpx"
 #   endif /* _PATH_UTMPX */
 #  endif
 # endif