diff --git a/lib/acl.js b/lib/acl.js
index a5fbd97..0cee404 100644
--- a/lib/acl.js
+++ b/lib/acl.js
@@ -640,10 +640,12 @@ Acl.prototype.middleware = function(numPathComponents, userId, actions){
       if (err){
         next(new Error('Error checking permissions to access resource'));
       }else if(allowed === false){
-        acl.logger?acl.logger.debug('Not allowed '+_actions+' on '+resource+' by user '+_userId):null;
-        acl.allowedPermissions(_userId, resource, function(err, obj){
-          acl.logger?acl.logger.debug('Allowed permissions: '+util.inspect(obj)):null;
-        });
+        if (acl.logger) {
+          acl.logger.debug('Not allowed '+_actions+' on '+resource+' by user '+_userId);
+          acl.allowedPermissions(_userId, resource, function(err, obj){		
+            acl.logger.debug('Allowed permissions: '+util.inspect(obj));
+          });
+        }
         next(new HttpError(403,'Insufficient permissions to access resource'));
       }else{
         acl.logger?acl.logger.debug('Allowed '+_actions+' on '+resource+' by user '+_userId):null;