diff --git a/glossary.asciidoc b/glossary.asciidoc
index cf3a3fd8..6bf117ed 100644
--- a/glossary.asciidoc
+++ b/glossary.asciidoc
@@ -222,7 +222,7 @@ soft fork::
     soft fork or Soft-Forking Change is a temporary fork in the blockchain which commonly occurs when miners using non-upgraded nodes don't follow a new consensus rule their nodes don’t know about.
     Not to be confused with fork, hard fork, software fork or Git fork.
 
-Stale Block::
+stale block::
     Block which were successfully mined but which isn’t included on the current best block chain, likely because some other block at the same height had its chain extended first.
 
 timelocks::