diff --git a/README.md b/README.md
index 5e282a4..0df65a4 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ is developed for the following practical cases:
 2. For _encrypted data transfer_:
    * As a secure in-memory container.
 
-`Cocoon` is developed with security in mind. It aims to do the only one thing and do it
+`Cocoon` is developed with security in mind. It aims to do only one thing and do it
 flawlessly. It has a minimal set of dependencies and a minimalist design to simplify control over
 security aspects. It's a pure Rust implementation, and all dependencies are pure Rust
 packages with disabled default features.