diff --git a/ch03.asciidoc b/ch03.asciidoc
index 467fec4e..f7a46c77 100644
--- a/ch03.asciidoc
+++ b/ch03.asciidoc
@@ -177,7 +177,7 @@ If all goes well, the +configure+ command will end by creating the customized bu
 
 ==== Building the Bitcoin Core Executables
 
-Next, you will compile the source code, a process that can take up to an hour to complete, depending on the speed of your CPU and available memory. During the compilation process you should see output every few seconds or every few minutes, or an error if something goes wrong. If an error occurs, or the compilation process is interrupted, it can be resumed any time by typing +make+ again. Type ++**make**++ to start compiling the executable application:
+((("Bitcoin Core", "compiling from source code", "core executables")))Next, you will compile the source code, a process that can take up to an hour to complete, depending on the speed of your CPU and available memory. During the compilation process you should see output every few seconds or every few minutes, or an error if something goes wrong. If an error occurs, or the compilation process is interrupted, it can be resumed any time by typing +make+ again. Type ++**make**++ to start compiling the executable application:
 
 ----
 $ make