diff --git a/README.md b/README.md
index addafac..ef4171a 100644
--- a/README.md
+++ b/README.md
@@ -190,7 +190,7 @@ Topics
  - Other Resources
  	- [Data Structures](http://codeforces.com/blog/entry/15729) - A guide to high level data structures by [PrinceOfPersia](http://codeforces.com/profile/PrinceOfPersia)
 
-## Prefix and Suffix Trees
+## Prefix Trees and Suffix Trees
 ---
 *Tries are some kind of rooted trees in which each edge has a character on it.*