diff --git a/apps/routerconsole/java/src/net/i2p/router/web/ConfigNetHandler.java b/apps/routerconsole/java/src/net/i2p/router/web/ConfigNetHandler.java
index 57f8f33c855dd0c177fcb6db17a2c2538e620337..a2298c7f71506c4bd19d78a02acb67e40fadcfd7 100644
--- a/apps/routerconsole/java/src/net/i2p/router/web/ConfigNetHandler.java
+++ b/apps/routerconsole/java/src/net/i2p/router/web/ConfigNetHandler.java
@@ -224,7 +224,7 @@ public class ConfigNetHandler extends FormHandler {
 
             // UDP Settings
             if ( (_udpPort != null) && (_udpPort.length() > 0) ) {
-                String oldPort = "" + _context.getProperty(UDPTransport.PROP_INTERNAL_PORT, UDPTransport.DEFAULT_INTERNAL_PORT);
+                String oldPort = _context.getProperty(UDPTransport.PROP_INTERNAL_PORT, "unset");
                 if (!oldPort.equals(_udpPort)) {
                     changes.put(UDPTransport.PROP_INTERNAL_PORT, _udpPort);
                     changes.put(UDPTransport.PROP_EXTERNAL_PORT, _udpPort);
diff --git a/apps/routerconsole/java/src/net/i2p/router/web/ConfigNetHelper.java b/apps/routerconsole/java/src/net/i2p/router/web/ConfigNetHelper.java
index 0881f51a2dba72cba9ce3cd42da2218d6c7af8ee..b7a2ad33a2d17394dbe6da058848bcb80fd0c920 100644
--- a/apps/routerconsole/java/src/net/i2p/router/web/ConfigNetHelper.java
+++ b/apps/routerconsole/java/src/net/i2p/router/web/ConfigNetHelper.java
@@ -61,7 +61,7 @@ public class ConfigNetHelper extends HelperBase {
     }
 
     public String getConfiguredUdpPort() {
-        return "" + _context.getProperty(UDPTransport.PROP_INTERNAL_PORT, UDPTransport.DEFAULT_INTERNAL_PORT);
+        return _context.getProperty(UDPTransport.PROP_INTERNAL_PORT, "unset");
     }
 
     /** @param prop must default to false */