diff --git a/ch03.asciidoc b/ch03.asciidoc
index 74634c27..59cebb39 100644
--- a/ch03.asciidoc
+++ b/ch03.asciidoc
@@ -57,7 +57,7 @@ $ cd bitcoin
 ----
 
 ==== Selecting a Bitcoin Core Release
-By default, the local copy will be synchronized with the most recent code, which might be an unstable or beta version of bitcoin. Before compiling the code, select a specific version by checking out a release _tag_. This will synchronize the local copy with a specific snapshot of the code repository identified by a keyword tag. Tags are used by the developers to mark specific releases of the code by version number. First, to find the available tags, we use the +git tag+ command:
+((("Bitcoin Core", "compiling from source code", "version selection")))By default, the local copy will be synchronized with the most recent code, which might be an unstable or beta version of bitcoin. Before compiling the code, select a specific version by checking out a release _tag_. This will synchronize the local copy with a specific snapshot of the code repository identified by a keyword tag. Tags are used by the developers to mark specific releases of the code by version number. First, to find the available tags, we use the +git tag+ command:
 
 ----
 $ git tag