diff --git a/iteration.qmd b/iteration.qmd
index 1fc133a..9c05c19 100644
--- a/iteration.qmd
+++ b/iteration.qmd
@@ -261,7 +261,7 @@ If you'd like to instead create new columns, you can use the `.names` argument t
 ```{r}
 df_miss |> 
   mutate(
-    across(a:d, \(x) abs(x), .names = "{.col}_abs")
+    across(a:d, \(x) coalesce(x, 0), .names = "{.col}_na_zero")
   )
 ```