diff --git a/arduino-core/src/processing/app/Serial.java b/arduino-core/src/processing/app/Serial.java
index 04803f363..cd57a6dc0 100644
--- a/arduino-core/src/processing/app/Serial.java
+++ b/arduino-core/src/processing/app/Serial.java
@@ -184,7 +184,7 @@ public class Serial implements SerialPortEventListener {
   }
 
 
-  private void write(byte bytes[]) {
+  public void write(byte bytes[]) {
     try {
       port.writeBytes(bytes);
     } catch (SerialPortException e) {