diff --git a/README.md b/README.md
index a37d05b..d8a43ae 100644
--- a/README.md
+++ b/README.md
@@ -90,7 +90,9 @@ Prefered way to compile project is using platformio toolchain, suitable for Ardu
 
 # Due compilation issue "USART0_Handler redefinition"
 Please, open  /variants/arduino_due_x/variant.cpp file, then add USART0_Handler method definition like this
+```
 void USART0_Handler(void) __attribute__((weak));
+```
 
 The normal path to find this file in platformio is:
 .platformio/packages/framework-arduinosam/variants/arduino_due_x