diff --git a/core/src/main/java/hudson/Functions.java b/core/src/main/java/hudson/Functions.java
index ef0f69e97dc2200777e60d36ca0f868855f7bbce..4384f6a7456f38d00eed8ffa571f752320841a06 100644
--- a/core/src/main/java/hudson/Functions.java
+++ b/core/src/main/java/hudson/Functions.java
@@ -1204,7 +1204,7 @@ public class Functions {
             return joinPath(Stapler.getCurrentRequest().getContextPath(),urlName);
         else
             // relative URL name
-            return joinPath(Stapler.getCurrentRequest().getContextPath(),itUrl,urlName);
+            return joinPath(Stapler.getCurrentRequest().getContextPath()+'/'+itUrl,urlName);
     }
 
     /**