diff --git a/core/src/main/java/hudson/Functions.java b/core/src/main/java/hudson/Functions.java
index 6cd097331a..d62070e9df 100644
--- a/core/src/main/java/hudson/Functions.java
+++ b/core/src/main/java/hudson/Functions.java
@@ -470,7 +470,7 @@ public class Functions {
                     return;
                 }
             }
-            throw new AssertionError(); // ancestor must include Hudson, which is AccessControlled.
+            checkPermission(Hudson.getInstance(),permission);
         }
     }