diff --git a/src/java/com/samskivert/util/Interval.java b/src/java/com/samskivert/util/Interval.java
index 518e5065..3072d4f1 100644
--- a/src/java/com/samskivert/util/Interval.java
+++ b/src/java/com/samskivert/util/Interval.java
@@ -55,6 +55,10 @@ public abstract class Interval
             @Override public void expired () {
                 onExpired.run();
             }
+
+            @Override public void toString () {
+                return onExpired.toString();
+            }
         };
     }
 
@@ -71,6 +75,10 @@ public abstract class Interval
             @Override public void expired () {
                 onExpired.run();
             }
+
+            @Override public void toString () {
+                return onExpired.toString();
+            }
         };
     }