diff --git a/README.md b/README.md
index 1b73ae1..5faa42e 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 ## Features
 
-1. Supports frequencies up to 400 Hz.
+1. Supports frequency up to 400 Hz.
 2. Automatic frequency detection.
 
 ## Using