diff --git a/Testing.md b/Testing.md
index 738186c..ef47cd1 100644
--- a/Testing.md
+++ b/Testing.md
@@ -35,7 +35,7 @@ My pin assignment is:
 
 The Raspi needs a level shifter because it is not 5V tolerant. I used a 74HC21 which is not the most commonly used level shifter, but that's what I found over the weekend in my parts collection. +5V is not connected as the Raspi as it is self powered.
 
-The *Arduino Pro Micro* has to be programmed with [arduino_leonardo_bridge.ini](https://github.com/mik3y/usb-serial-for-android/blob/master/test/arduino_leonardo_bridge/arduino_leonardo_bridge.ino)
+The *Arduino Pro Micro* has to be programmed with [arduino_leonardo_bridge.ino](https://github.com/mik3y/usb-serial-for-android/blob/master/test/arduino_leonardo_bridge/arduino_leonardo_bridge.ino)
 
 # Test execution