diff --git a/Assets/css/kanboard-support.css b/Assets/css/kanboard-support.css
index 0272372..81202a8 100644
--- a/Assets/css/kanboard-support.css
+++ b/Assets/css/kanboard-support.css
@@ -745,6 +745,10 @@ form.add-webhook-form .form-actions button {
     color: var(--pp-grey);
 }
 
+.config-btns button.config-download-btn:disabled svg {
+    color: var(--pp-red-alt-2);
+}
+
 .config-btns button svg, .config-download-btn svg {
     vertical-align: sub;
     width: 22px;
diff --git a/Template/config_sections/app-info.php b/Template/config_sections/app-info.php
index 129f8db..f0759bb 100644
--- a/Template/config_sections/app-info.php
+++ b/Template/config_sections/app-info.php
@@ -56,11 +56,17 @@
                     'plugin' => 'KanboardSupport'), false, '', false) ?>" class="btn config-btn config-btn-red js-modal-confirm" title="<?= t('This file is for reference only') ?>">
                     <?= $this->helper->supportHelper->embedSVGIcon('raw-icon') ?> <?= t('Default Raw Config File') ?>
                 </button>
+                <?php if (extension_loaded('zip')): ?>
                     <form method="post" action="<?= $this->url->href('TechnicalSupportController', 'backupConfigFiles', array('plugin' => 'KanboardSupport'), true, '', false) ?>">
                         <button type="submit" class="btn config-download-btn">
                             <?= $this->helper->supportHelper->embedSVGIcon('zip-icon') ?> <?= t('Download Config Files') ?>
                         </button>
                     </form>
+                <?php else: ?>
+                    <button type="submit" class="btn config-download-btn" title="<?= t('PHP \'zip\' Extension Not Detected. Check the \'PHP Information\' section of this page.') ?>" disabled>
+                        <?= $this->helper->supportHelper->embedSVGIcon('zip-icon') ?> <?= t('Download Config Files') ?>
+                    </button>
+                <?php endif ?>
             </div>
         <?php endif ?>
         <?= $this->render('KanboardSupport:config_sections/app-sections') ?>