diff --git a/plugins/AdminerJsonColumn.php b/plugins/AdminerJsonColumn.php
index 746182e..ae51ec7 100644
--- a/plugins/AdminerJsonColumn.php
+++ b/plugins/AdminerJsonColumn.php
@@ -61,7 +61,7 @@ class AdminerJsonColumn
 			$name = $field['field'];
 			?>
             <a href="#" id="toggle_json_<?= $name ?>">show as table</a><br>
-            <pre id="show_json_<?= $name ?>" style="display: none"><?= json_encode($json, JSON_PRETTY_PRINT); ?></pre>
+            <pre id="show_json_<?= $name ?>" style="display: none"><?= htmlentities(json_encode($json, JSON_PRETTY_PRINT)); ?></pre>
             <script <?= nonce() ?>>
                 document.getElementById('toggle_json_<?= $name ?>').addEventListener('click', function (e) {
                     e.preventDefault();