diff --git a/visualize.Rmd b/visualize.Rmd
index 216d6dc..1b9e48f 100644
--- a/visualize.Rmd
+++ b/visualize.Rmd
@@ -565,9 +565,9 @@ ggplot2 provides over 20 stats for you to use. Each stat is a function, so you c
     
     ```{r, eval = FALSE}
     ggplot(data = diamonds) + 
-      geom_bar(mapping = aes(x = cut, y = ..prop..))
+      geom_bar(mapping = aes(x = cut, y = after_stat(prop)))
     ggplot(data = diamonds) + 
-      geom_bar(mapping = aes(x = cut, fill = color, y = ..prop..))
+      geom_bar(mapping = aes(x = cut, fill = color, y = after_stat(prop)))
     ```