diff --git a/core/src/main/java/hudson/model/AbstractItem.java b/core/src/main/java/hudson/model/AbstractItem.java
index 3e6135b0318dd1217969db8af60db4761df23744..bb2e988195d014f022dc14919bacf9c25b01ea02 100644
--- a/core/src/main/java/hudson/model/AbstractItem.java
+++ b/core/src/main/java/hudson/model/AbstractItem.java
@@ -661,8 +661,8 @@ public abstract class AbstractItem extends Actionable implements Item, HttpDelet
         return getName();
     }
 
-    public String toString() {
-        return super.toString()+'['+getFullName()+']';
+    @Override public String toString() {
+        return super.toString() + '[' + (parent != null ? getFullName() : "?/" + name) + ']';
     }
 
     /**