diff --git a/examples/self-tracking/README.md b/examples/self-tracking/README.md
index 9f647423b..d948fdcf1 100644
--- a/examples/self-tracking/README.md
+++ b/examples/self-tracking/README.md
@@ -237,7 +237,7 @@ value
 ```
 
 hledger's data model doesn't include time, but we can pivot on the time tag
-and summarise activities by hour each day (eg):
+and take advantage of the colon to summarise activities by hour each day (eg):
 
 ```
 $ hledger -f d.csv print | hledger -f- bal --pivot=time --depth 1 -DAE