diff --git a/Readme.md b/Readme.md
index 2183c8e..0e9cd34 100644
--- a/Readme.md
+++ b/Readme.md
@@ -30,7 +30,7 @@ cargo dfu
 #### specifying the chip
 
 ```bash
-cargo dfu --chip stm32f4
+cargo dfu --chip stm32
 ```
 
 #### specifying the vid and pid