diff --git a/src/com/t_oster/liblasercut/drivers/SmoothieBoard.java b/src/com/t_oster/liblasercut/drivers/SmoothieBoard.java
index 8eaa1b3fc9a9740f3dbe92feddbb439177c8001f..6eef4cbcaa268fe6d8fedb2275b3c388e02af9de 100644
--- a/src/com/t_oster/liblasercut/drivers/SmoothieBoard.java
+++ b/src/com/t_oster/liblasercut/drivers/SmoothieBoard.java
@@ -38,6 +38,8 @@ public class SmoothieBoard extends GenericGcodeDriver {
     setBaudRate(115200);
     setLineend("CRLF");
     setInitDelay(0);
+    setPreJobGcode(getPreJobGcode()+",M3");
+    setPostJobGcode(getPostJobGcode()+",M5");
   }
   
   @Override