diff --git a/js/kiri-driver-laser.js b/js/kiri-driver-laser.js
index 7e185257..31a2997a 100644
--- a/js/kiri-driver-laser.js
+++ b/js/kiri-driver-laser.js
@@ -186,8 +186,8 @@ var gs_kiri_laser = exports;
             });
         });
 
-        // normalize against origin lower left
         if (!process.outputOriginCenter) {
+            // normalize against origin lower left
             output.forEach(function(layer) {
                 layer.forEach(function(out) {
                     point = out.point;
@@ -199,6 +199,21 @@ var gs_kiri_laser = exports;
             max.y = max.y - min.y;
             min.x = 0;
             min.y = 0;
+        } else {
+            // normalize against center of build area
+            let w = print.settings.device.bedWidth;
+            let h = print.settings.device.bedDepth;
+            output.forEach(function(layer) {
+                layer.forEach(function(out) {
+                    point = out.point;
+                    point.x += w/2;
+                    point.y += h/2;
+                });
+            });
+            max.x = w;
+            max.y = h;
+            min.x = 0;
+            min.y = 0;
         }
 
         onpre(min, max, process.outputLaserPower, process.outputLaserSpeed);
diff --git a/js/license.js b/js/license.js
index 2b4421b1..3fd2111d 100644
--- a/js/license.js
+++ b/js/license.js
@@ -1,7 +1,7 @@
 var exports = {
     COPYRIGHT:"Copyright (C) 2014-2019 Stewart Allen <sa@grid.space> - All Rights Reserved",
     LICENSE:"See the license.md file included with the source distribution",
-    VERSION:"1.4.2"
+    VERSION:"1.4.3"
 };
 if (!module) var module = {};
 module.exports = exports;