diff --git a/lib/dao.js b/lib/dao.js
index bc04d80b..50b9eef9 100644
--- a/lib/dao.js
+++ b/lib/dao.js
@@ -330,7 +330,7 @@ setRemoting(DataAccessObject.exists, {
   description: 'Check whether a model instance exists in the data source',
   accepts: {arg: 'id', type: 'any', description: 'Model id', required: true,
             http: {source: 'path'}},
-  returns: {arg: 'exists', type: 'any'},
+  returns: {arg: 'exists', type: 'boolean'},
   http: {verb: 'get', path: '/:id/exists'}
 });