diff --git a/visualize.Rmd b/visualize.Rmd
index 42a63a2..cc6e21f 100644
--- a/visualize.Rmd
+++ b/visualize.Rmd
@@ -359,7 +359,8 @@ ggplot(data = mpg) +
     
 ggplot(data = mpg) +
   geom_smooth(
-    mapping = aes(x = displ, y = hwy, group = drv)
+    mapping = aes(x = displ, y = hwy, color = drv),
+    show.legend = FALSE
   )
 ```