diff --git a/README b/README
index c2f0667..9160b6b 100644
--- a/README
+++ b/README
@@ -5,22 +5,18 @@ About
 -----
 WrapSix is a fast NAT64 implementation. You also need a DNS64 server (e.g. BIND).
 
-Before compiling, don't forget to configure Wrapsix in files src/wrapper.c.
-
-Configuration
--------------
-HOST_IPV6_ADDR	IPv6 address which represents the host, i.e. which is assigned
-		to the operating system. It's used in ICMP error messages.
-HOST_IPV4_ADDR	IPv4 address which represents the host, i.e. which is assigned
-		to the operating system. It's used in ICMP error messages.
-
-WrapSix uses configuration file wrapsix.conf from configuration directory set in
-"./configure" phase, which is by default /usr/local/etc.
-
 Installation
 ------------
 For installation use standard ./configure && make && make install commands.
 
+Configuration
+-------------
+WrapSix uses configuration file wrapsix.conf from configuration directory set in
+"./configure" phase, which is by default /usr/local/etc. You can also specify
+custom configuration file in runtime -- just pass its path as an argument:
+
+# wrapsix ./wrapsix.conf
+
 Running
 -------
 It can be run by `wrapsix` command as root.