diff --git a/ch04.asciidoc b/ch04.asciidoc
index c2ed5a5c..439001f5 100644
--- a/ch04.asciidoc
+++ b/ch04.asciidoc
@@ -333,8 +333,9 @@ Both private and public keys can be represented in a number of different formats
 [[priv_formats]]
 ===== Private key formats
 
-The private key can be represented in a number of different formats, all of which correspond to the same 256-bit number. Table 4-2 shows three common formats used to represent private keys.
+The private key can be represented in a number of different formats, all of which correspond to the same 256-bit number. <<table_4-2>> shows three common formats used to represent private keys.
 
+[[table_4-2]]
 .Private key representations (encoding formats)
 [options="header"]
 |=======