diff --git a/README.md b/README.md
index 0c013fc..400a492 100644
--- a/README.md
+++ b/README.md
@@ -74,7 +74,7 @@ phive install dephpend
 
 # or
 
-phive install -copy dephpend
+phive install --copy dephpend
 ```
 
 ### Composer