diff --git a/README.md b/README.md
index 56037a4..169a28f 100755
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ Guan is an open source python package, dealing with tight-binding models by calc
 
 pip install --upgrade guan
 
-## Usage:
+## Usage
 
 import guan