diff --git a/STM32F1/libraries/Wire/examples/i2c_scanner_wire/i2c_scanner_wire.ino b/STM32F1/libraries/Wire/examples/i2c_scanner_wire/i2c_scanner_wire.ino
index 30224d2..0367b4e 100644
--- a/STM32F1/libraries/Wire/examples/i2c_scanner_wire/i2c_scanner_wire.ino
+++ b/STM32F1/libraries/Wire/examples/i2c_scanner_wire/i2c_scanner_wire.ino
@@ -26,6 +26,10 @@
 
 #include <Wire.h>
 
+//use IIC2
+//TwoWire WIRE2 (2,I2C_FAST_MODE);
+//#define Wire WIRE2
+
 
 void setup() {
 
@@ -71,4 +75,4 @@ void loop() {
     Serial.println("done");
 
   delay(5000);           // wait 5 seconds for next scan
-}
\ No newline at end of file
+}