diff --git a/visualize.Rmd b/visualize.Rmd
index 7e6ef96..1bb813d 100644
--- a/visualize.Rmd
+++ b/visualize.Rmd
@@ -167,7 +167,7 @@ ggplot(data = mpg) +
   geom_point(mapping = aes(x = displ, y = hwy), color = "blue")
 ```
 
-Here, the color doesn't convey information about a variable, but only changes the appearance of the plot. To set an aesthetic manually, set the aesthetic by name as an argument of your geom function; i.e. it goes _outside_ of `aes()`. You'll need to pick a value that makes sense for that aesthetic:
+Here, the color doesn't convey information about a variable, but only changes the appearance of the plot. To set an aesthetic manually, set the aesthetic by name as an argument of your geom function; i.e. it goes _outside_ of `aes()`. You'll need to pick a level that makes sense for that aesthetic:
 
 * The name of a color as a character string.