diff --git a/jetty-util/src/main/java/org/eclipse/jetty/util/Jetty.java b/jetty-util/src/main/java/org/eclipse/jetty/util/Jetty.java
index 102b83713bf..98472b064b8 100644
--- a/jetty-util/src/main/java/org/eclipse/jetty/util/Jetty.java
+++ b/jetty-util/src/main/java/org/eclipse/jetty/util/Jetty.java
@@ -90,7 +90,7 @@ public class Jetty
         }
         catch ( NumberFormatException e )
         {
-            LOG.debug( e );
+            LOG.ignore( e );
             return "unknown";
         }
     }