Title: AMP validation error Last modified: August 31, 2016 --- # AMP validation error * Resolved [Cowboy Coding](https://wordpress.org/support/users/devaceza-1/) * (@devaceza-1) * [10 years, 1 month ago](https://wordpress.org/support/topic/amp-validation-error/) * Hi, * Good Day… * I found out that your awesome plugin causing validation error on AMP pages “The attribute ‘href’ in tag ‘link rel=stylesheet for fonts’ is set to the invalid value ‘autoptimize/css/autoptimize_c0295bf7c0c50ee378d0bf045f8d6cef.css’.”. * Can you help me on how to fix the issue please ? * Thanks * Regards * [https://wordpress.org/plugins/autoptimize/](https://wordpress.org/plugins/autoptimize/) Viewing 8 replies - 1 through 8 (of 8 total) * Plugin Author [Frank Goossens](https://wordpress.org/support/users/futtta/) * (@futtta) * [10 years, 1 month ago](https://wordpress.org/support/topic/amp-validation-error/#post-7353641) * _very_ weird devaceza; AO is not supposed to be active an AMP-pages. can you share your URL here or via futtta-at-gmail-dot-com? * frank * Thread Starter [Cowboy Coding](https://wordpress.org/support/users/devaceza-1/) * (@devaceza-1) * [10 years, 1 month ago](https://wordpress.org/support/topic/amp-validation-error/#post-7353644) * Hi Frank * I sent to your email the URL, can you confirm please that you received it? * Thanks * Regards, Aaron * Plugin Author [Frank Goossens](https://wordpress.org/support/users/futtta/) * (@futtta) * [10 years, 1 month ago](https://wordpress.org/support/topic/amp-validation-error/#post-7353649) * OK, the problem is that AO currently bails when it encounters `` * Which is correct for amp but AO just doesn’t recognize it as an AMP-page. * Give me a second, I’ll be back with a workaround soon (and will fix for the next AO-version). * Oh, question; which plugin are you using to have AMP-pages? * frank * Thread Starter [Cowboy Coding](https://wordpress.org/support/users/devaceza-1/) * (@devaceza-1) * [10 years, 1 month ago](https://wordpress.org/support/topic/amp-validation-error/#post-7353650) * I am using the WPtouch Pro plugin using the AMP extension provided by that plugin. * [http://www.wptouch.com/extensions/amp//](http://www.wptouch.com/extensions/amp//) * Regards, Aaron * Plugin Author [Frank Goossens](https://wordpress.org/support/users/futtta/) * (@futtta) * [10 years, 1 month ago](https://wordpress.org/support/topic/amp-validation-error/#post-7353653) * ok, use this as a workaround; * ``` add_filter('autoptimize_filter_noptimize','amp_workaround'); function amp_workaround($in) { if (strpos($_SERVER['REQUEST_URI'],'/amp/')!==false) { return true; } else { return false; } } ``` * you can add this using [the code snippets plugin](https://wordpress.org/plugins/code-snippets/) or in your child theme’s functions.php if you insist 😉 * frank * Thread Starter [Cowboy Coding](https://wordpress.org/support/users/devaceza-1/) * (@devaceza-1) * [10 years, 1 month ago](https://wordpress.org/support/topic/amp-validation-error/#post-7353658) * Hi Frank, * I inserted your code on my child theme’s functions.php and it works! Thank you so much Frank. * Plugin Author [Frank Goossens](https://wordpress.org/support/users/futtta/) * (@futtta) * [10 years, 1 month ago](https://wordpress.org/support/topic/amp-validation-error/#post-7353667) * Nice. I should be back with a more fundamental solution later today, would be great if you could test that. * frank * Plugin Author [Frank Goossens](https://wordpress.org/support/users/futtta/) * (@futtta) * [10 years, 1 month ago](https://wordpress.org/support/topic/amp-validation-error/#post-7353676) * OK, so the more fundamental fix is in the development-version of Autoptimize, you can see it in [this GitHub commit](https://github.com/futtta/autoptimize/commit/3f6a7c51ec6a413bd597324333b21bdc758091a6). * It would be great if you could test this on your site (after having disabled the code you just added to your functions.php) by either making the (small) change in `wp-content/plugins/autoptimize/autoptimize.php` or by [downloading the zip-file from GitHub](https://github.com/futtta/autoptimize/archive/master.zip) and overwriting your `wp-content/plugins/autoptimize` folder with the contents of the `autoptimize-master` folder of the zipfile. * frank Viewing 8 replies - 1 through 8 (of 8 total) The topic ‘AMP validation error’ is closed to new replies. * ![](https://ps.w.org/autoptimize/assets/icon-256X256.png?rev=2211608) * [Autoptimize](https://wordpress.org/plugins/autoptimize/) * [Frequently Asked Questions](https://wordpress.org/plugins/autoptimize/#faq) * [Support Threads](https://wordpress.org/support/plugin/autoptimize/) * [Active Topics](https://wordpress.org/support/plugin/autoptimize/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/autoptimize/unresolved/) * [Reviews](https://wordpress.org/support/plugin/autoptimize/reviews/) * 8 replies * 2 participants * Last reply from: [Frank Goossens](https://wordpress.org/support/users/futtta/) * Last activity: [10 years, 1 month ago](https://wordpress.org/support/topic/amp-validation-error/#post-7353676) * Status: resolved