diff --git a/lib/Cake/Model/Permission.php b/lib/Cake/Model/Permission.php
index <HASH>..<HASH> 100644
--- a/lib/Cake/Model/Permission.php
+++ b/lib/Cake/Model/Permission.php
@@ -82,9 +82,9 @@ class Permission extends AppModel {
 		$aroPath = $this->Aro->node($aro);
 		$acoPath = $this->Aco->node($aco);
 
-		if (!$aroPath || !$acoPath) {
+		if (!$aroPath) {
 			trigger_error(__d('cake_dev',
-					"%s - Failed ARO/ACO node lookup in permissions check. Node references:\nAro: %s\nAco: %s",
+					"%s - Failed ARO node lookup in permissions check. Node references:\nAro: %s\nAco: %s",
 					'DbAcl::check()',
 					print_r($aro, true),
 					print_r($aco, true)),
Clarified ACL node lookup failed error.

Original error was ambiguous in stating whether the ARO node lookup failed or the ACO node lookup failed.