### Eclipse Workspace Patch 1.0
#P oak-core
Index: src/main/java/org/apache/jackrabbit/oak/security/privilege/PrivilegeManagerImpl.java
===================================================================
--- src/main/java/org/apache/jackrabbit/oak/security/privilege/PrivilegeManagerImpl.java	(revision 1527504)
+++ src/main/java/org/apache/jackrabbit/oak/security/privilege/PrivilegeManagerImpl.java	(working copy)
@@ -116,7 +116,11 @@
         if (jcrName == null) {
             throw new AccessControlException("Invalid privilege name 'null'");
         }
-        return namePathMapper.getOakName(jcrName);
+        String oakName = namePathMapper.getOakNameOrNull(jcrName);
+        if (oakName == null) {
+        	throw new AccessControlException("Cannot resolve privilege name " + jcrName);
+        }
+        return oakName;
     }
 
     @Nonnull