diff --git a/src/Fancybox/plugins/Html/Html.js b/src/Fancybox/plugins/Html/Html.js
index 740087e..d493dce 100644
--- a/src/Fancybox/plugins/Html/Html.js
+++ b/src/Fancybox/plugins/Html/Html.js
@@ -288,9 +288,12 @@ export class Html {
}
};
- xhr.open("GET", slide.src);
+ const data = slide.ajax || null;
+
+ xhr.open(data ? "POST" : "GET", slide.src);
+ xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
- xhr.send(slide.ajax || null);
+ xhr.send(data);
slide.xhr = xhr;
}