diff --git a/visualize.Rmd b/visualize.Rmd
index b54d684..d9b434d 100644
--- a/visualize.Rmd
+++ b/visualize.Rmd
@@ -84,7 +84,7 @@ The rest of this chapter will show you how to complete and extend this template
 
 1.  Run `ggplot(data = mpg)` what do you see?
 
-1.  How many rows are in `mtcars`? How many columns?
+1.  How many rows are in `mpg`? How many columns?
 
 1.  What does the `drv` variable describe?  Read the help for `?mpg` to find
     out.