diff --git a/ch12.asciidoc b/ch12.asciidoc
index 41c2e06a..be319403 100644
--- a/ch12.asciidoc
+++ b/ch12.asciidoc
@@ -297,7 +297,7 @@ Every commitment transaction the parties exchange during the life of the channel
 
 For example, if commitment transaction #1 is timelocked to 4320 blocks in the future, then commitment transaction #2 is timelocked to 4319 blocks in the future. Commitment transaction #600 can be spent 600 blocks before commitment transaction #1 becomes valid.
 
-<<timelocked_commitments>> shows each commitment transaction setting a shorter timelock, allowing it to be spent before the previous commitments become valid:
+<<timelocked_commitments>> shows each commitment transaction setting a shorter timelock, allowing it to be spent before the previous commitments become valid.
 
 [[timelocked_commitments]]
 .Each commitment sets a shorter timelock, allowing it to be spent before the previous commitments become valid