diff --git a/README.md b/README.md
index a6ebd0e..f6ebe3a 100644
--- a/README.md
+++ b/README.md
@@ -109,7 +109,7 @@ their respective ``punchd`` instances (PA and PB) might look like this:
 ```
 AA -> PA: initiate|645|tcp-syni|1.2.3.4|1234|5.6.7.8|5678,5679,5680
 AA <- PA: progress|645|tcp-syni|1.2.3.4|1234|5.6.7.8|5678,5679,5680|344567,644456,345365
-<AA sends notification to AB>
+--- AA sends notification to AB ---
 AB -> PB: respond|538|tcp-syni|1.2.3.4|1234|5.6.7.8|5678,5679,5680|344567,644456,345365
 AB <- PB: ok|538
 AA <- PA: ok|645