diff --git a/src/main/java/info/istlab/IoTP/SerialWindow.java b/src/main/java/info/istlab/IoTP/SerialWindow.java
index f18fb87..a0222d6 100644
--- a/src/main/java/info/istlab/IoTP/SerialWindow.java
+++ b/src/main/java/info/istlab/IoTP/SerialWindow.java
@@ -157,11 +157,11 @@
         String action = e.getActionCommand();
         System.out.println(action);
         try {
-            String message = action + "";
+            String message = action + "\n";
             byte[] b = message.getBytes();
             System.out.println("send " + b.length + " bytes");
             sp.writeBytes(b, b.length);
-
+            jtf.setText("");
         } catch (Exception ex) {
             System.out.println(ex.getMessage());
         }