diff --git a/serial/src/processing/serial/Serial.java b/serial/src/processing/serial/Serial.java
index bdbb4b284..ccc0d3a2a 100644
--- a/serial/src/processing/serial/Serial.java
+++ b/serial/src/processing/serial/Serial.java
@@ -207,6 +207,14 @@ public class Serial implements SerialPortEventListener {
   }
 
 
+  /**
+  * Set the DTR line. Addition from Tom Hulbert.
+  */
+  public void setDTR(boolean state) {
+	port.setDTR(state);
+  }
+
+
   synchronized public void serialEvent(SerialPortEvent serialEvent) {
     if (serialEvent.getEventType() == SerialPortEvent.DATA_AVAILABLE) {
       try {
@@ -658,4 +666,3 @@ public class Serial implements SerialPortEventListener {
   */
 
 
-