diff --git a/jetty-io/src/main/java/org/eclipse/jetty/io/SelectorManager.java b/jetty-io/src/main/java/org/eclipse/jetty/io/SelectorManager.java
index 4972ea81888..6c2e35552c4 100644
--- a/jetty-io/src/main/java/org/eclipse/jetty/io/SelectorManager.java
+++ b/jetty-io/src/main/java/org/eclipse/jetty/io/SelectorManager.java
@@ -314,7 +314,7 @@ public abstract class SelectorManager extends AbstractLifeCycle implements Dumpa
             if (isRunning())
                 LOG.warn("Exception while notifying connection " + connection, x);
             else
-                LOG.debug("Exception while notifying connection {}",connection, x);
+                LOG.debug("Exception while notifying connection " + connection, x);
         }
     }