diff --git a/visualize.Rmd b/visualize.Rmd
index df6f360b..bb290ef0 100644
--- a/visualize.Rmd
+++ b/visualize.Rmd
@@ -508,7 +508,7 @@ points are spread across multiple plots.
 
 The benefit of encoding a variable with facetting over encoding it with color increase in both the number of points and the number of categories.
 With a large number of points, there is often overlap.
-It is difficult to handle overlapping points with different colors color.
+It is difficult to handle overlapping points with different colors.
 Jittering will still work with color.
 But jittering will only work well if there are few points and the classes do not overlap much, otherwise, the colors of areas will no longer be distinct, and it will be hard to pick out the patterns of different categories visually.
 Transparency (`alpha`) does not work well with colors since the mixing of overlapping transparent colors will no longer represent the colors of the categories.