diff --git a/docs/key-assignment/design.md b/docs/key-assignment/design.md
index a357b34291..7a25a9ed30 100644
--- a/docs/key-assignment/design.md
+++ b/docs/key-assignment/design.md
@@ -42,7 +42,7 @@ QueryConsumerChainValidatorKeyAssignment (
 
 ## Internal API (High Level)
 
-TODO: write this section
+TODO: write this section.
 
 ## API (Details)