Title: Compatibility test WP_CACHE define: Not defined
Last modified: May 25, 2018

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# Compatibility test WP_CACHE define: Not defined

 *  [nicocaldo](https://wordpress.org/support/users/nicocaldo/)
 * (@nicocaldo)
 * [8 years ago](https://wordpress.org/support/topic/compatibility-test-wp_cache-define-not-defined/)
 * I have just noticed that under the **Compatibility test** there is voice _WP\
   _CACHE define: Not defined_
    Is it normal?
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fcompatibility-test-wp_cache-define-not-defined%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Contributor [gidomanders](https://wordpress.org/support/users/gidomanders/)
 * (@gidomanders)
 * [8 years ago](https://wordpress.org/support/topic/compatibility-test-wp_cache-define-not-defined/#post-10325044)
 * You should have the following in your `wp-config.php` file:
 *     ```
       /** Enable W3 Total Cache */
       define('WP_CACHE', true); // Added by W3 Total Cache
       ```
   
 * If it’s not there, try to add it manually, preferable right after the `<?php`.
 *  Plugin Contributor [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/)
 * (@vmarko)
 * [7 years, 11 months ago](https://wordpress.org/support/topic/compatibility-test-wp_cache-define-not-defined/#post-10443382)
 * Hello [@nicocaldo](https://wordpress.org/support/users/nicocaldo/),
 * Have you managed to resolve the issue? Please give us a feedback so you can close
   the topic and mark it as resolved.
 * Best regards,
 * Marko

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Compatibility test WP_CACHE define: Not defined’ is closed to new replies.

 * ![](https://ps.w.org/w3-total-cache/assets/icon-256x256.png?rev=1041806)
 * [W3 Total Cache](https://wordpress.org/plugins/w3-total-cache/)
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 * 2 replies
 * 3 participants
 * Last reply from: [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/)
 * Last activity: [7 years, 11 months ago](https://wordpress.org/support/topic/compatibility-test-wp_cache-define-not-defined/#post-10443382)
 * Status: not resolved