diff --git a/datetimes.qmd b/datetimes.qmd
index 4f8039e..c58c2c1 100644
--- a/datetimes.qmd
+++ b/datetimes.qmd
@@ -654,7 +654,7 @@ flights_dt |>
 ### Intervals {#sec-intervals}
 
 What does `dyears(1) / ddays(365)` return?
-It's not quite one, because `dyear()` is defined as the number of seconds per average year, which is 365.25 days.
+It's not quite one, because `dyears()` is defined as the number of seconds per average year, which is 365.25 days.
 
 What does `years(1) / days(1)` return?
 Well, if the year was 2015 it should return 365, but if it was 2016, it should return 366!