diff --git a/README.md b/README.md
index 0420c02..deb17a8 100644
--- a/README.md
+++ b/README.md
@@ -183,7 +183,7 @@ window.$lazypoly = function() {
 };
 ```
 
-When using `$async` you can alternatively use `window.$lazypoly` with a string or a object to pass to `$async` which could load anything.
+When using `$async` you can alternatively use `window.$lazypoly` with a string or a object to pass to `$async.js` which could load anything.
 
 Alternatively, when including `$lazy` inline, the `data-poly` attribute enables to define a string to pass to `$async`.
 
diff --git a/dist/lazy+polyfill.js b/dist/lazy+polyfill.js
index 9487ffb..e69d9b0 100644
--- a/dist/lazy+polyfill.js
+++ b/dist/lazy+polyfill.js
@@ -1,3 +1,3 @@
 (function(e,p){function l(a,b){a&&"object"===typeof a||(a=[a]);var d=a[0]||a.selector||"[data-src]",c=a[1]||a.threshold||.006;a=a[2]||a.rootMargin||"0px";c="object"===typeof c?c:{threshold:[c],rootMargin:a};var f;"function"!==typeof b&&(b=function(a){for(var b,c=0,d=a.length;c<d;c++)if(b=a[c],!k||b.isIntersecting){var g=k?b.target:b,f=g.getAttribute("data-srcset"),h=g.getAttribute("data-src");f&&(g.srcset=f);h&&(g.src=h);"CustomEvent"in e&&g.dispatchEvent(new CustomEvent("$lazy",{bubbles:!0,cancelable:!0,
 detail:{el:g,entry:b}}));k&&k.unobserve(g)}});var k=h?new h(b,c):!1;d instanceof Node?f=[d]:f=d instanceof NodeList?d:p.querySelectorAll(d);c=0;for(a=f.length;c<a;c++)d=f[c],k?k.observe(d):b([d])}function q(a,b){n.push([a,b])}var h,m="IntersectionObserverEntry"in e?e.IntersectionObserverEntry.prototype:0;m&&"intersectionRatio"in m&&"isIntersecting"in m&&(h=e.IntersectionObserver);e.$lazy=l;var n=[];if(!h){if(e.$lazypoly)var b=e.$lazypoly;b&&(e.$lazy=q,"function"===typeof b&&(b=b()),("string"!==typeof b&&
-"then"in b?b:$async(b)).then(function(){e.$lazy=l;for(var a;a=n.shift();)l(a)}))}})(window,document);
+"then"in b?b:$async.a(b)).then(function(){e.$lazy=l;for(var a;a=n.shift();)l(a)}))}})(window,document);
diff --git a/dist/lazy-data-attr+polyfill.js b/dist/lazy-data-attr+polyfill.js
index e87f82c..b408034 100644
--- a/dist/lazy-data-attr+polyfill.js
+++ b/dist/lazy-data-attr+polyfill.js
@@ -1,3 +1,3 @@
 (function(f,h){function e(c,a){c&&"object"===typeof c||(c=[c]);var b=c[0]||c.selector||"[data-src]",d=c[1]||c.threshold||.006;c=c[2]||c.rootMargin||"0px";d="object"===typeof d?d:{threshold:[d],rootMargin:c};var e;"function"!==typeof a&&(a=function(a){for(var c,b=0,e=a.length;b<e;b++)if(c=a[b],!k||c.isIntersecting){var d=k?c.target:c,g=d.getAttribute("data-srcset"),h=d.getAttribute("data-src");g&&(d.srcset=g);h&&(d.src=h);"CustomEvent"in f&&d.dispatchEvent(new CustomEvent("$lazy",{bubbles:!0,cancelable:!0,
 detail:{el:d,entry:c}}));k&&k.unobserve(d)}});var k=g?new g(a,d):!1;b instanceof Node?e=[b]:e=b instanceof NodeList?b:h.querySelectorAll(b);d=0;for(c=e.length;d<c;d++)b=e[d],k?k.observe(b):a([b])}function n(a,b){m.push([a,b])}var g,b="IntersectionObserverEntry"in f?f.IntersectionObserverEntry.prototype:0;b&&"intersectionRatio"in b&&"isIntersecting"in b&&(g=f.IntersectionObserver);f.$lazy=e;var a;b=h.currentScript||h.querySelectorAll("script[data-l]");var m=[];g||(f.$lazypoly?a=f.$lazypoly:b&&(a=b.getAttribute("data-poly")),
-a&&(f.$lazy=n,"function"===typeof a&&(a=a()),("string"!==typeof a&&"then"in a?a:$async(a)).then(function(){f.$lazy=e;for(var a;a=m.shift();)e(a)})));if(b){(a=b.getAttribute("data-l"))&&0===a.indexOf("||")?a=a.split("||"):a=[a];b=0;for(var p=a.length;b<p;b++){try{var l=JSON.parse(a)}catch(c){l=!1}l?e(l):e()}}})(window,document);
+a&&(f.$lazy=n,"function"===typeof a&&(a=a()),("string"!==typeof a&&"then"in a?a:$async.a(a)).then(function(){f.$lazy=e;for(var a;a=m.shift();)e(a)})));if(b){(a=b.getAttribute("data-l"))&&0===a.indexOf("||")?a=a.split("||"):a=[a];b=0;for(var p=a.length;b<p;b++){try{var l=JSON.parse(a)}catch(c){l=!1}l?e(l):e()}}})(window,document);
diff --git a/src/lazy-async-polyfill.js b/src/lazy-async-polyfill.js
index 51c7e6d..7be15f0 100644
--- a/src/lazy-async-polyfill.js
+++ b/src/lazy-async-polyfill.js
@@ -32,7 +32,7 @@ if (!intersectionObserver) {
 
         // enable custom promise/callback
         // @example window.$lazypoly = function() { return { then: function(callback) { /* ... */ } } };
-        ((typeof POLYFILL !== 'string' && "then" in POLYFILL) ? POLYFILL : $async(POLYFILL)).then(function() {
+        ((typeof POLYFILL !== 'string' && "then" in POLYFILL) ? POLYFILL : $async.js(POLYFILL)).then(function() {
 
             // restore lazy handler
             win.$lazy = $lazy;