diff --git a/book/src/terminology.md b/book/src/terminology.md
index 5dd9216f9..74e00dcc6 100644
--- a/book/src/terminology.md
+++ b/book/src/terminology.md
@@ -25,7 +25,7 @@ A contiguous set of [entries](#entry) on the ledger covered by a
 #### block height
 
 The number of [blocks](#block) beneath the current block. The first block after
-the [genesis block](#genesis block) has height zero.
+the [genesis block](#genesis-block) has height zero.
 
 #### block id