diff --git a/README.md b/README.md
index 8511ee7..8e28be4 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@
 <span class="badge-travisci"><a href="http://travis-ci.org/jouke/loopback-auditz" title="Check this project's build status on TravisCI"><img src="https://img.shields.io/travis/jouke/loopback-auditz/master.svg" alt="Travis CI Build Status" /></a></span>
 <span class="badge-npmversion"><a href="https://npmjs.org/package/loopback-auditz" title="View this project on NPM"><img src="https://img.shields.io/npm/v/loopback-auditz.svg" alt="NPM version" /></a></span>
 <span class="badge-npmdownloads"><a href="https://npmjs.org/package/loopback-auditz" title="View this project on NPM"><img src="https://img.shields.io/npm/dm/loopback-auditz.svg" alt="NPM downloads" /></a></span>
-<span class="badge-coveralls"><a href="https://coveralls.io/r/jouke/loopback-auditz" title="View this project's coverage on Coveralls"><img src="https://img.shields.io/coveralls/jouke/loopback-auditz.svg" alt="Coverage Status" /></a></span>
+<span class="badge-coveralls"><a href="https://coveralls.io/r/jouke/loopback-auditz" title="View this project's coverage on Coveralls"><img src="https://img.shields.io/coveralls/jouke/loopback-auditz.svg" alt="Coveralls Coverage Status" /></a></span>
 <span class="badge-daviddm"><a href="https://david-dm.org/jouke/loopback-auditz" title="View the status of this project's dependencies on DavidDM"><img src="https://img.shields.io/david/jouke/loopback-auditz.svg" alt="Dependency Status" /></a></span>
 <span class="badge-daviddmdev"><a href="https://david-dm.org/jouke/loopback-auditz#info=devDependencies" title="View the status of this project's development dependencies on DavidDM"><img src="https://img.shields.io/david/dev/jouke/loopback-auditz.svg" alt="Dev Dependency Status" /></a></span>
 
diff --git a/src/auditz.js b/src/auditz.js
index 7a2bbc4..8c01b49 100644
--- a/src/auditz.js
+++ b/src/auditz.js
@@ -1,5 +1,5 @@
 import _debug from './debug';
-
+import loopackUtils from 'loopback/lib/utils';
 const debug = _debug();
 const warn = (options, ...rest) => {
   if (!options.silenceWarnings) {
@@ -319,40 +319,44 @@ export default (Model, bootOptions = {}) => {
   if (options.softDelete) {
     Model.destroyAll = function softDestroyAll(where, cb) {
       let query = where || {};
-      let callback = cb;
+      let callback = cb || loopackUtils.createPromiseCallback();
       if (typeof where === 'function') {
         callback = where;
         query = {};
       }
-      return Model.updateAll(query, { ...scrubbed }, {delete: true})
-        .then(result => (typeof callback === 'function') ? callback(null, result) : result)
-        .catch(error => (typeof callback === 'function') ? callback(error) : Promise.reject(error));
+      Model.updateAll(query, { ...scrubbed }, {delete: true})
+        .then(result => callback(null, result))
+        .catch(error => callback(error));
+      return callback.promise;
     };
 
     Model.remove = Model.destroyAll;
     Model.deleteAll = Model.destroyAll;
 
     Model.destroyById = function softDestroyById(id, opt, cb) {
-      const callback = (cb === undefined && typeof opt === 'function') ? opt : cb;
+      let callback = (cb === undefined && typeof opt === 'function') ? opt : cb;
+      callback = callback || loopackUtils.createPromiseCallback();
       let newOpt = {delete: true};
       if (typeof opt === 'object') {
         newOpt.remoteCtx = opt.remoteCtx;
       }
 
-      return Model.updateAll({ [idName]: id }, { ...scrubbed}, newOpt)
-        .then(result => (typeof callback === 'function') ? callback(null, result) : result)
-        .catch(error => (typeof callback === 'function') ? callback(error) : Promise.reject(error));
+      Model.updateAll({ [idName]: id }, { ...scrubbed}, newOpt)
+        .then(result => callback(null, result))
+        .catch(error => callback(error));
+      return callback.promise;
     };
 
     Model.removeById = Model.destroyById;
     Model.deleteById = Model.destroyById;
 
     Model.prototype.destroy = function softDestroy(opt, cb) {
-      const callback = (cb === undefined && typeof opt === 'function') ? opt : cb;
-
-      return this.updateAttributes({ ...scrubbed }, {delete: true})
-        .then(result => (typeof cb === 'function') ? callback(null, result) : result)
-        .catch(error => (typeof cb === 'function') ? callback(error) : Promise.reject(error));
+      let callback = (cb === undefined && typeof opt === 'function') ? opt : cb;
+      callback = callback || loopackUtils.createPromiseCallback();
+      this.updateAttributes({ ...scrubbed }, {delete: true})
+        .then(result => callback(null, result))
+        .catch(error => callback(error));
+      return callback.promise;
     };
 
     Model.prototype.remove = Model.prototype.destroy;