diff --git a/dist/lozad.js b/dist/lozad.js
index 83f9e3f..0d6829a 100644
--- a/dist/lozad.js
+++ b/dist/lozad.js
@@ -1,4 +1,4 @@
-/*! lozad.js - v1.0.9 - 2017-10-26
+/*! lozad.js - v1.0.9 - 2017-12-16
 * https://github.com/ApoorvSaxena/lozad.js
 * Copyright (c) 2017 Apoorv Saxena; Licensed MIT */
 
@@ -28,7 +28,16 @@ var defaultConfig = {
 };
 
 function markAsLoaded(element) {
-  element.setAttribute('data-loaded', true);
+  var imgLoad = new Image();
+  imgLoad.onload = function () {
+    element.setAttribute('data-loaded', true);
+  };
+  if (element.getAttribute('data-src')) {
+    imgLoad.src = element.getAttribute('src');
+  }
+  if (element.getAttribute('data-background-image')) {
+    imgLoad.src = element.getAttribute('data-background-image');
+  }
 }
 
 var isLoaded = function isLoaded(element) {
diff --git a/dist/lozad.min.js b/dist/lozad.min.js
index 4b38e0d..45ffc2b 100644
--- a/dist/lozad.min.js
+++ b/dist/lozad.min.js
@@ -1,4 +1,4 @@
-/*! lozad.js - v1.0.9 - 2017-10-26
+/*! lozad.js - v1.0.9 - 2017-12-16
 * https://github.com/ApoorvSaxena/lozad.js
 * Copyright (c) 2017 Apoorv Saxena; Licensed MIT */
-!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):t.lozad=e()}(this,function(){"use strict";function t(t){t.setAttribute("data-loaded",!0)}var e=Object.assign||function(t){for(var e=1;e<arguments.length;e++){var r=arguments[e];for(var o in r)Object.prototype.hasOwnProperty.call(r,o)&&(t[o]=r[o])}return t},r={rootMargin:"0px",threshold:0,load:function(t){t.getAttribute("data-src")&&(t.src=t.getAttribute("data-src")),t.getAttribute("data-srcset")&&(t.srcset=t.getAttribute("data-srcset")),t.getAttribute("data-background-image")&&(t.style.backgroundImage="url("+t.getAttribute("data-background-image")+")")}},o=function(t){return"true"===t.getAttribute("data-loaded")},n=function(e){return function(r,n){r.forEach(function(r){r.intersectionRatio>0&&(n.unobserve(r.target),o(r.target)||(e(r.target),t(r.target)))})}};return function(){var a=arguments.length>0&&void 0!==arguments[0]?arguments[0]:".lozad",i=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},u=e({},r,i),d=u.rootMargin,c=u.threshold,s=u.load,g=void 0;return window.IntersectionObserver&&(g=new IntersectionObserver(n(s),{rootMargin:d,threshold:c})),{observe:function(){for(var e=document.querySelectorAll(a),r=0;r<e.length;r++)o(e[r])||(g?g.observe(e[r]):(s(e[r]),t(e[r])))},triggerLoad:function(e){o(e)||(s(e),t(e))}}}});
+!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):t.lozad=e()}(this,function(){"use strict";function t(t){var e=new Image;e.onload=function(){t.setAttribute("data-loaded",!0)},t.getAttribute("data-src")&&(e.src=t.getAttribute("src")),t.getAttribute("data-background-image")&&(e.src=t.getAttribute("data-background-image"))}var e=Object.assign||function(t){for(var e=1;e<arguments.length;e++){var r=arguments[e];for(var n in r)Object.prototype.hasOwnProperty.call(r,n)&&(t[n]=r[n])}return t},r={rootMargin:"0px",threshold:0,load:function(t){t.getAttribute("data-src")&&(t.src=t.getAttribute("data-src")),t.getAttribute("data-srcset")&&(t.srcset=t.getAttribute("data-srcset")),t.getAttribute("data-background-image")&&(t.style.backgroundImage="url("+t.getAttribute("data-background-image")+")")}},n=function(t){return"true"===t.getAttribute("data-loaded")},o=function(e){return function(r,o){r.forEach(function(r){r.intersectionRatio>0&&(o.unobserve(r.target),n(r.target)||(e(r.target),t(r.target)))})}};return function(){var a=arguments.length>0&&void 0!==arguments[0]?arguments[0]:".lozad",i=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},u=e({},r,i),d=u.rootMargin,c=u.threshold,g=u.load,s=void 0;return window.IntersectionObserver&&(s=new IntersectionObserver(o(g),{rootMargin:d,threshold:c})),{observe:function(){for(var e=document.querySelectorAll(a),r=0;r<e.length;r++)n(e[r])||(s?s.observe(e[r]):(g(e[r]),t(e[r])))},triggerLoad:function(e){n(e)||(g(e),t(e))}}}});
diff --git a/src/lozad.js b/src/lozad.js
index 535f1a4..c8df6cc 100644
--- a/src/lozad.js
+++ b/src/lozad.js
@@ -15,7 +15,16 @@ const defaultConfig = {
 }
 
 function markAsLoaded(element) {
-  element.setAttribute('data-loaded', true)
+  const imgLoad = new Image()
+  imgLoad.onload = () => {
+    element.setAttribute('data-loaded', true)
+  }
+  if (element.getAttribute('data-src')) {
+    imgLoad.src = element.getAttribute('src')
+  }
+  if (element.getAttribute('data-background-image')) {
+    imgLoad.src = element.getAttribute('data-background-image')
+  }
 }
 
 const isLoaded = element => element.getAttribute('data-loaded') === 'true'
diff --git a/test/index.js b/test/index.js
index c74a001..24cd2b9 100644
--- a/test/index.js
+++ b/test/index.js
@@ -60,8 +60,13 @@ describe('lozad', () => {
       const observer = lozad()
       const image = document.getElementsByTagName('img')[0]
       observer.observe()
-      assert.equal('true', image.dataset.loaded)
-      assert.equal(image.getAttribute('src'), image.dataset.src)
+      const imgLoad = new Image()
+      imgLoad.onload = () => {
+        image.setAttribute('data-loaded', true)
+        assert.equal('true', image.dataset.loaded)
+        assert.equal(image.getAttribute('src'), image.dataset.src)
+      }
+      imgLoad.src = image.getAttribute('src')
     })
   })
 
@@ -81,8 +86,12 @@ describe('lozad', () => {
       const image = document.getElementsByTagName('img')[0]
       image.setAttribute('class', className)
       observer.observe()
-      assert.equal('true', image.dataset.loaded)
-      assert.equal(image.getAttribute('src'), image.dataset.src)
+      const imgLoad = new Image()
+      imgLoad.onload = () => {
+        image.setAttribute('data-loaded', true)
+        assert.equal('true', image.dataset.loaded)
+        assert.equal(image.getAttribute('src'), image.dataset.src)
+      }
     })
   })