diff --git a/ch04.asciidoc b/ch04.asciidoc
index 3997ceac..5fd97a25 100644
--- a/ch04.asciidoc
+++ b/ch04.asciidoc
@@ -594,8 +594,9 @@ BIP0039 defines the creation of a mnemonic code and seed as a follows:
The mnemonic code represents 128 to 256 bits, which are used to derive a longer (512-bit) seed through the use of the key-stretching function PBKDF2. The resulting seed is used to create a deterministic wallet and all of its derived keys.
-Table 4-6 and Table 4-7 list some examples of mnemonic codes and the seeds they produce.
+Tables pass:[] and pass:[] list some examples of mnemonic codes and the seeds they produce.
+[[table_4-6]]
.128-bit entropy mnemonic code and resulting seed
|=======
| entropy input (128 bits) | 0c1e24e5917779d297e14d45f14e1a1a
@@ -604,7 +605,7 @@ Table 4-6 and Table 4-7 list some examples of mnemonic codes and the seeds they
8a599b44b93187be6ee3ab5fd3ead7dd646341b2cdb8d08d13bf7
|=======
-
+[[table_4-7]]
.256-bit entropy mnemonic code and resulting seed
|=======
| entropy input (256 bits) | 2041546864449caff939d32d574753fe684d3c947c3346713dd8423e74abcf8c