diff --git a/ch04.asciidoc b/ch04.asciidoc
index e3dbb0a2..70f586fd 100644
--- a/ch04.asciidoc
+++ b/ch04.asciidoc
@@ -884,8 +884,9 @@ It's important to realize that a bitcoin address is simply a number represented
 | To | 1Kidszzzzzzzzzzzzzzzzzzzzzzzzzzzzz
 |=======
 
-Let's look at the pattern "1Kids" as a number and see how frequently we might find this pattern in a bitcoin address (see Table 4-12). An average desktop computer PC, without any specialized hardware, can search approximately 100,000 keys per second.
+Let's look at the pattern "1Kids" as a number and see how frequently we might find this pattern in a bitcoin address (see <<table_4-12>>). An average desktop computer PC, without any specialized hardware, can search approximately 100,000 keys per second.
 
+[[table_4-12]]
 .The frequency of a vanity pattern (1KidsCharity) and average time-to-find on a desktop PC
 [options="header"]
 |=======