diff --git a/transform.Rmd b/transform.Rmd
index 9986a2f..6eef67c 100644
--- a/transform.Rmd
+++ b/transform.Rmd
@@ -869,7 +869,7 @@ Functions that work most naturally in grouped mutates and filters are known as
 
 ### Exercises
 
-1.  Refer back to the table of useful mutate and filtering functions. 
+1.  Refer back to the lists of useful mutate and filtering functions. 
     Describe how each operation changes when you combine it with grouping.
 
 1.  Which plane (`tailnum`) has the worst on-time record?