diff --git a/acl/src/main/java/org/springframework/security/acls/AclPermissionEvaluator.java b/acl/src/main/java/org/springframework/security/acls/AclPermissionEvaluator.java
index 76e5da5867..4c550e8fed 100644
--- a/acl/src/main/java/org/springframework/security/acls/AclPermissionEvaluator.java
+++ b/acl/src/main/java/org/springframework/security/acls/AclPermissionEvaluator.java
@@ -125,7 +125,7 @@ public class AclPermissionEvaluator implements PermissionEvaluator {
             }
 
         }
-        throw new IllegalArgumentException("unsupported permission: " + permission);
+        throw new IllegalArgumentException("Unsupported permission: " + permission);
     }
 
     public void setObjectIdentityRetrievalStrategy(ObjectIdentityRetrievalStrategy objectIdentityRetrievalStrategy) {
@@ -139,4 +139,8 @@ public class AclPermissionEvaluator implements PermissionEvaluator {
     public void setSidRetrievalStrategy(SidRetrievalStrategy sidRetrievalStrategy) {
         this.sidRetrievalStrategy = sidRetrievalStrategy;
     }
+
+    public void setPermissionFactory(PermissionFactory permissionFactory) {
+        this.permissionFactory = permissionFactory;
+    }
 }