diff --git a/doc/build-unix.md b/doc/build-unix.md
index 1d8395162..5d8644efe 100644
--- a/doc/build-unix.md
+++ b/doc/build-unix.md
@@ -67,15 +67,17 @@ Build requirements:
 
     sudo apt-get install build-essential libtool autotools-dev automake pkg-config libssl-dev libevent-dev bsdmainutils
 
-On at least Ubuntu 14.04+ and Debian 7+ there are generic names for the
+Options when installing required Boost library files:
+
+1. On at least Ubuntu 14.04+ and Debian 7+ there are generic names for the
 individual boost development packages, so the following can be used to only
 install necessary parts of boost:
 
-    sudo apt-get install libboost-system-dev libboost-filesystem-dev libboost-chrono-dev libboost-program-options-dev libboost-test-dev libboost-thread-dev
+        sudo apt-get install libboost-system-dev libboost-filesystem-dev libboost-chrono-dev libboost-program-options-dev libboost-test-dev libboost-thread-dev
 
-If that doesn't work, you can install all boost development packages with:
+2. If that doesn't work, you can install all boost development packages with:
 
-    sudo apt-get install libboost-all-dev
+        sudo apt-get install libboost-all-dev
 
 BerkeleyDB is required for the wallet. db4.8 packages are available [here](https://launchpad.net/~bitcoin/+archive/bitcoin).
 You can add the repository and install using the following commands: