diff --git a/includes/Admin/Admin_AJAX.php b/includes/Admin/Admin_AJAX.php
index e202b03e1..05362b962 100644
--- a/includes/Admin/Admin_AJAX.php
+++ b/includes/Admin/Admin_AJAX.php
@@ -145,6 +145,9 @@ public function set_up_environment() {
 	 * Handles the AJAX request to cleanup the runtime environment.
 	 *
 	 * @since 1.0.0
+	 *
+	 * @global wpdb   $wpdb         WordPress database abstraction object.
+	 * @global string $table_prefix The database table prefix.
 	 */
 	public function clean_up_environment() {
 		global $wpdb, $table_prefix;
diff --git a/includes/Checker/Abstract_Check_Runner.php b/includes/Checker/Abstract_Check_Runner.php
index 2d42f6836..025dc108b 100644
--- a/includes/Checker/Abstract_Check_Runner.php
+++ b/includes/Checker/Abstract_Check_Runner.php
@@ -319,6 +319,9 @@ final public function prepare() {
 	 *
 	 * @since 1.0.0
 	 *
+	 * @global wpdb   $wpdb         WordPress database abstraction object.
+	 * @global string $table_prefix The database table prefix.
+	 *
 	 * @return Check_Result An object containing all check results.
 	 */
 	final public function run() {
diff --git a/includes/Checker/Runtime_Environment_Setup.php b/includes/Checker/Runtime_Environment_Setup.php
index ccdc9e5fc..86d1d4e8c 100644
--- a/includes/Checker/Runtime_Environment_Setup.php
+++ b/includes/Checker/Runtime_Environment_Setup.php
@@ -18,6 +18,10 @@ final class Runtime_Environment_Setup {
 	 * Sets up the WordPress environment for runtime checks
 	 *
 	 * @since 1.0.0
+	 *
+	 * @global wpdb               $wpdb          WordPress database abstraction object.
+	 * @global string             $table_prefix  The database table prefix.
+	 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass.
 	 */
 	public function set_up() {
 		global $wpdb, $table_prefix, $wp_filesystem;
diff --git a/includes/Utilities/Plugin_Request_Utility.php b/includes/Utilities/Plugin_Request_Utility.php
index f6e0c11c5..37b1c1868 100644
--- a/includes/Utilities/Plugin_Request_Utility.php
+++ b/includes/Utilities/Plugin_Request_Utility.php
@@ -187,6 +187,8 @@ public static function get_files_to_ignore() {
 	 *
 	 * @since 1.1.0
 	 *
+	 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass.
+	 *
 	 * @param string $plugin_url The URL of the plugin to download.
 	 * @return string The plugin basename after downloading and installing the plugin.
 	 *