diff --git a/dist/sanji-rest-ui.js b/dist/sanji-rest-ui.js
index 5ef04f1..c9d9a77 100644
--- a/dist/sanji-rest-ui.js
+++ b/dist/sanji-rest-ui.js
@@ -1 +1 @@
-!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t(require("angular"),require("ng-file-upload")):"function"==typeof define&&define.amd?define(["angular","ng-file-upload"],t):"object"==typeof exports?exports.sjRest=t(require("angular"),require("ng-file-upload")):e.sjRest=t(e.angular,e.ngFileUpload)}(this,function(e,t){return function(e){function t(r){if(n[r])return n[r].exports;var u=n[r]={i:r,l:!1,exports:{}};return e[r].call(u.exports,u,u.exports,t),u.l=!0,u.exports}var n={};return t.m=e,t.c=n,t.i=function(e){return e},t.d=function(e,t,n){Object.defineProperty(e,t,{configurable:!1,enumerable:!0,get:n})},t.n=function(e){var n=e&&e.__esModule?function(){return e.default}:function(){return e};return t.d(n,"a",n),n},t.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},t.p="",t(t.s=4)}([function(e,t){"use strict";function n(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}Object.defineProperty(t,"__esModule",{value:!0});var r=function(){function e(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}return function(t,n,r){return n&&e(t.prototype,n),r&&e(t,r),t}}(),u=["$http"],o=function(){function e(){for(var t=this,r=arguments.length,u=Array(r),o=0;o<r;o++)u[o]=arguments[o];n(this,e),e.$inject.forEach(function(e,n){return t[e]=u[n]})}return r(e,[{key:"get",value:function(e){return this.$http.get.apply(null,e)}},{key:"post",value:function(e){return this.$http.post.apply(null,e)}},{key:"put",value:function(e){return this.$http.put.apply(null,e)}},{key:"delete",value:function(e){return this.$http.delete.apply(null,e)}}]),e}();o.$inject=u,t.default=o},function(e,t){"use strict";function n(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}Object.defineProperty(t,"__esModule",{value:!0});var r=function(){function e(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}return function(t,n,r){return n&&e(t.prototype,n),r&&e(t,r),t}}(),u=[],o=function(){function e(){for(var t=this,r=arguments.length,u=Array(r),o=0;o<r;o++)u[o]=arguments[o];n(this,e),e.$inject.forEach(function(e,n){return t[e]=u[n]}),this.config={service:"http",basePath:""},this.configure=function(e){return Object.assign(t.config,e)}}return r(e,[{key:"$get",value:["$q","$log","$injector","Upload",function(e,t,n,r){"ngInject";function u(e,t,n){n[0]instanceof File?1===n.length?e.data.file=n[0]:e.data.files=n:n.forEach(function(t){t.key&&(e.data[t.key]=t.file)}),t&&(e.data=Object.assign({},e.data,t))}function o(t,n,r,u){var o=e.defer(),c=u||{},f=c.basePath||a.basePath,l=[f+n];return t=t.toLowerCase(),t.match(/post|put/)&&l.push(r),t.match(/delete/)&&(c.data=r,c.headers={"Content-Type":"application/json"}),l.push(c),i[t](l).then(function(e){o.resolve(e)}).catch(function(e){o.reject(e)}),o.promise}var a=this.config,i=n.get(a.service);return{configure:function(e){return Object.assign(a,e)},get:function(e,t){return o("get",e,null,t)},post:function(e,t,n,i){if("http"===a.service&&Array.isArray(n)){i=i||{};var c=i.basePath||a.basePath,f={url:c+e,method:"POST",data:{}};return u(f,t,n),r.upload(Object.assign(f,i))}return o("post",e,t,i)},put:function(e,t,n,i){if("http"===a.service&&Array.isArray(n)){i=i||{};var c=i.basePath||a.basePath,f={url:c+e,method:"PUT",data:{}};return u(f,t,n),r.upload(Object.assign(f,i))}return o("put",e,t,i)},delete:function(e,t,n){return o("delete",e,t,n)}}}]}]),e}();o.$inject=u,t.default=o},function(t,n){t.exports=e},function(e,n){e.exports=t},function(e,t,n){"use strict";function r(e){return e&&e.__esModule?e:{default:e}}Object.defineProperty(t,"__esModule",{value:!0}),t.sjRest=void 0;var u=n(2),o=r(u),a=n(3),i=r(a),c=n(0),f=r(c),l=n(1),s=r(l),p=o.default.module("sanji.rest",[i.default]).service("http",f.default).provider("rest",s.default).name;t.sjRest=p}])});
\ No newline at end of file
+!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t(require("angular"),require("ng-file-upload")):"function"==typeof define&&define.amd?define(["angular","ng-file-upload"],t):"object"==typeof exports?exports.sjRest=t(require("angular"),require("ng-file-upload")):e.sjRest=t(e.angular,e.ngFileUpload)}(this,function(e,t){return function(e){function t(r){if(n[r])return n[r].exports;var u=n[r]={i:r,l:!1,exports:{}};return e[r].call(u.exports,u,u.exports,t),u.l=!0,u.exports}var n={};return t.m=e,t.c=n,t.i=function(e){return e},t.d=function(e,t,n){Object.defineProperty(e,t,{configurable:!1,enumerable:!0,get:n})},t.n=function(e){var n=e&&e.__esModule?function(){return e.default}:function(){return e};return t.d(n,"a",n),n},t.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},t.p="",t(t.s=4)}([function(e,t){"use strict";function n(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}Object.defineProperty(t,"__esModule",{value:!0});var r=function(){function e(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}return function(t,n,r){return n&&e(t.prototype,n),r&&e(t,r),t}}(),u=["$http"],o=function(){function e(){for(var t=this,r=arguments.length,u=Array(r),o=0;o<r;o++)u[o]=arguments[o];n(this,e),e.$inject.forEach(function(e,n){return t[e]=u[n]})}return r(e,[{key:"get",value:function(e){return this.$http.get.apply(null,e)}},{key:"post",value:function(e){return this.$http.post.apply(null,e)}},{key:"put",value:function(e){return this.$http.put.apply(null,e)}},{key:"delete",value:function(e){return this.$http.delete.apply(null,e)}}]),e}();o.$inject=u,t.default=o},function(e,t){"use strict";function n(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}Object.defineProperty(t,"__esModule",{value:!0});var r=function(){function e(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}return function(t,n,r){return n&&e(t.prototype,n),r&&e(t,r),t}}(),u=[],o=function(){function e(){for(var t=this,r=arguments.length,u=Array(r),o=0;o<r;o++)u[o]=arguments[o];n(this,e),e.$inject.forEach(function(e,n){return t[e]=u[n]}),this.config={service:"http",basePath:""},this.configure=function(e){return Object.assign(t.config,e)}}return r(e,[{key:"$get",value:["$q","$log","$injector","Upload",function(e,t,n,r){"ngInject";function u(e,t,n){n[0]instanceof File?1===n.length?e.data.file=n[0]:e.data.files=n:n.forEach(function(t){t.key&&(e.data[t.key]=t.file)}),t&&(e.data=Object.assign({},e.data,t))}function o(t,n,r,u){var o=e.defer(),c=u||{},f=c.basePath||a.basePath,l=[f+n];return t=t.toLowerCase(),t.match(/post|put/)&&l.push(r),t.match(/delete/)&&(c.data=r,c.headers?c.headers["Content-Type"]="application/json":c.headers={"Content-Type":"application/json"}),l.push(c),i[t](l).then(function(e){o.resolve(e)}).catch(function(e){o.reject(e)}),o.promise}var a=this.config,i=n.get(a.service);return{configure:function(e){return Object.assign(a,e)},get:function(e,t){return o("get",e,null,t)},post:function(e,t,n,i){if("http"===a.service&&Array.isArray(n)){i=i||{};var c=i.basePath||a.basePath,f={url:c+e,method:"POST",data:{}};return u(f,t,n),r.upload(Object.assign(f,i))}return o("post",e,t,i)},put:function(e,t,n,i){if("http"===a.service&&Array.isArray(n)){i=i||{};var c=i.basePath||a.basePath,f={url:c+e,method:"PUT",data:{}};return u(f,t,n),r.upload(Object.assign(f,i))}return o("put",e,t,i)},delete:function(e,t,n){return o("delete",e,t,n)}}}]}]),e}();o.$inject=u,t.default=o},function(t,n){t.exports=e},function(e,n){e.exports=t},function(e,t,n){"use strict";function r(e){return e&&e.__esModule?e:{default:e}}Object.defineProperty(t,"__esModule",{value:!0}),t.sjRest=void 0;var u=n(2),o=r(u),a=n(3),i=r(a),c=n(0),f=r(c),l=n(1),s=r(l),p=o.default.module("sanji.rest",[i.default]).service("http",f.default).provider("rest",s.default).name;t.sjRest=p}])});
\ No newline at end of file
diff --git a/package.json b/package.json
index 48389c0..f788213 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "sanji-rest-ui",
   "author": "Zack Yang <zack9433@gmail.com> (https://github.com/zack9433)",
   "description": "sanji-rest-ui UI",
-  "version": "1.4.0",
+  "version": "1.4.1",
   "main": "dist/sanji-rest-ui.js",
   "config": {
     "ghooks": {
diff --git a/src/component/restful.provider.js b/src/component/restful.provider.js
index 3afaf7d..68e4885 100644
--- a/src/component/restful.provider.js
+++ b/src/component/restful.provider.js
@@ -88,9 +88,11 @@ class RestProvider {
 
       if (verb.match(/delete/)) {
         reqConfig.data = data;
-        reqConfig.headers = {
-          'Content-Type': 'application/json'
-        };
+        if (reqConfig.headers) {
+          reqConfig.headers['Content-Type'] = 'application/json';
+        } else {
+          reqConfig.headers = { 'Content-Type': 'application/json' };
+        }
       }
 
       args.push(reqConfig);