Title: Call to undefined function check_admin_referer()
Last modified: November 9, 2016

---

# Call to undefined function check_admin_referer()

 *  Resolved [WordPressGuy](https://wordpress.org/support/users/crankycyclops/)
 * (@crankycyclops)
 * [9 years, 6 months ago](https://wordpress.org/support/topic/call-to-undefined-function-check_admin_referer/)
 * As of version 0.3.4, using WordPress 4.6.1, I get a white screen of death and
   the following error in my log whenever I try to save an updated signature:
 * PHP Fatal error: Call to undefined function check_admin_referer() in …/wp-content/
   plugins/wp-post-signature/wp-post-signature-page.php on line 10
    -  This topic was modified 9 years, 6 months ago by [WordPressGuy](https://wordpress.org/support/users/crankycyclops/).

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Thread Starter [WordPressGuy](https://wordpress.org/support/users/crankycyclops/)
 * (@crankycyclops)
 * [9 years, 6 months ago](https://wordpress.org/support/topic/call-to-undefined-function-check_admin_referer/#post-8414087)
 * I was able to temporarily fix this by including the following line at the top
   of wp-post-signature-page.php:
 * include_once(ABSPATH . ‘wp-includes/pluggable.php’);
 * Not sure if this is a bug in WordPress core or not (something I Googled seemed
   to suggest it might be.)
    -  This reply was modified 9 years, 6 months ago by [WordPressGuy](https://wordpress.org/support/users/crankycyclops/).
 *  Plugin Author [Soli](https://wordpress.org/support/users/allnull/)
 * (@allnull)
 * [9 years, 6 months ago](https://wordpress.org/support/topic/call-to-undefined-function-check_admin_referer/#post-8415048)
 * Hi,
 * Thanks for your feedback.
 * Could you update to v0.3.5, and see if it works?
 * Good luck. ^_^
 *  Thread Starter [WordPressGuy](https://wordpress.org/support/users/crankycyclops/)
 * (@crankycyclops)
 * [9 years, 6 months ago](https://wordpress.org/support/topic/call-to-undefined-function-check_admin_referer/#post-8415674)
 * Seems to work now. Thanks for the fix!

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Call to undefined function check_admin_referer()’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/wp-post-signature.svg)
 * [WP Post Signature](https://wordpress.org/plugins/wp-post-signature/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-post-signature/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-post-signature/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-post-signature/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-post-signature/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wp-post-signature/reviews/)

## Tags

 * [white screen](https://wordpress.org/support/topic-tag/white-screen/)

 * 3 replies
 * 2 participants
 * Last reply from: [WordPressGuy](https://wordpress.org/support/users/crankycyclops/)
 * Last activity: [9 years, 6 months ago](https://wordpress.org/support/topic/call-to-undefined-function-check_admin_referer/#post-8415674)
 * Status: resolved