diff --git a/transform.Rmd b/transform.Rmd
index 778ff00..a45507b 100644
--- a/transform.Rmd
+++ b/transform.Rmd
@@ -35,7 +35,7 @@ You might also have noticed the row of three letter abbreviations under the colu
 
 ### Dplyr basics
 
-In this chapter you are going to learn the five key five dplyr functions that allow you to solve vast majority of your data manipulation challenges:
+In this chapter you are going to learn the five key dplyr functions that allow you to solve vast majority of your data manipulation challenges:
 
 * Pick observations by their values (`filter()`).
 * Reorder the rows (`arrange()`).