diff --git a/README.md b/README.md
index e10c6f1..47a2e59 100644
--- a/README.md
+++ b/README.md
@@ -145,7 +145,7 @@ $ go test
 
 ### Collection assertions
 
-The library contains many collection assertion.
+The library contains many collection assertions.
 Below is an example of checking unordered equality.
 
 ```go