diff --git a/docs/architecture/adr-033-pubsub.md b/docs/architecture/adr-033-pubsub.md
index 5321d138..6547110d 100644
--- a/docs/architecture/adr-033-pubsub.md
+++ b/docs/architecture/adr-033-pubsub.md
@@ -76,7 +76,7 @@ memory leaks and/or memory usage increase.
 
 Go channels are de-facto standard for carrying data between goroutines.
 
-Question: Does it worth switching to callback functions?
+**Question: Does it worth switching to callback functions?**
 
 ### Why `Subscribe()` accepts an `out` channel?