diff --git a/processing/app/PdeEditor.java b/processing/app/PdeEditor.java
index 3993a0490..b3997eebf 100644
--- a/processing/app/PdeEditor.java
+++ b/processing/app/PdeEditor.java
@@ -381,6 +381,11 @@ public class PdeEditor extends JPanel {
 	skNew();
       }
 
+      String serialPort = skprops.getProperty("serial.port");
+      if(serialPort != null) {
+        PdeBase.properties.put("serial.port", serialPort);
+      }
+      
       boolean ee = new Boolean(skprops.getProperty("editor.external", "false")).booleanValue();
       setExternalEditor(ee);
 
@@ -1702,6 +1707,8 @@ afterwards, some of these steps need a cleanup function
 
       skprops.put("editor.external", externalEditor ? "true" : "false");
 
+      skprops.put("serial.port", PdeBase.get("serial.port", "unspecified"));
+
       skprops.save(output, "auto-generated by pde, please don't touch");
 
     } catch (IOException e) {