diff --git a/app/Serial.java b/app/Serial.java
index 802f9511b..2d80271be 100755
--- a/app/Serial.java
+++ b/app/Serial.java
@@ -476,6 +476,9 @@ public class Serial implements SerialPortEventListener {
     write(what.getBytes());
   }
 
+  public void setDTR(boolean state) {
+    port.setDTR(state);
+  }
 
   /**
    * If this just hangs and never completes on Windows, 
diff --git a/app/Uploader.java b/app/Uploader.java
index de47c102a..335da5261 100755
--- a/app/Uploader.java
+++ b/app/Uploader.java
@@ -72,6 +72,15 @@ public abstract class Uploader implements MessageConsumer  {
         Thread.sleep(100);
       } catch (InterruptedException e) {}
     }
+
+    serialPort.setDTR(false);
+
+    try {
+      Thread.sleep(100);
+    } catch (InterruptedException e) {}
+
+    serialPort.setDTR(true);
+    
     serialPort.dispose();
   }