diff --git a/README.md b/README.md
index b8f12d8..3858c24 100644
--- a/README.md
+++ b/README.md
@@ -13,6 +13,10 @@
 5. Activate Plugin in WP Backend
 
 ## Tested Oxygen versions
+
+- 4.8.3
+
+### Versions before 1.2.0
 - 4
 - 3.9
 - 3.8
diff --git a/commands/class-oxygenregeneratecsscache.php b/commands/class-oxygenregeneratecsscache.php
index 31ae945..a357006 100644
--- a/commands/class-oxygenregeneratecsscache.php
+++ b/commands/class-oxygenregeneratecsscache.php
@@ -52,12 +52,12 @@ private function regenerateEverything():void {
       'meta_query' => [
         'relation' => 'OR',
         [
-          'key'     => 'ct_builder_shortcodes',
+          'key'     => '_ct_builder_shortcodes',
           'value'   => '',
           'compare' => '!=',
         ],
         [
-          'key'     => 'ct_builder_json',
+          'key'     => '_ct_builder_json',
           'value'   => '',
           'compare' => '!=',
         ],
diff --git a/commands/class-oxygensignshortcode.php b/commands/class-oxygensignshortcode.php
index 7df8a26..d212929 100644
--- a/commands/class-oxygensignshortcode.php
+++ b/commands/class-oxygensignshortcode.php
@@ -33,7 +33,7 @@ function sign_shortcode($args, $assoc_args) {
 					'numberposts' => -1,
 					'orderby' => 'ID',
 					'order' => 'ASC',
-					'meta_key' => 'ct_builder_shortcodes',
+					'meta_key' => '_ct_builder_shortcodes',
 				)
 			);