diff --git a/modules/widget-visibility/widget-conditions.php b/modules/widget-visibility/widget-conditions.php
index 9e451ac70ccf0..c6241dea8da13 100644
--- a/modules/widget-visibility/widget-conditions.php
+++ b/modules/widget-visibility/widget-conditions.php
@@ -312,6 +312,10 @@ public static function widget_conditions_admin( $widget, $return, $instance ) {
 	 * @return array Modified settings.
 	 */
 	public static function widget_update( $instance, $new_instance, $old_instance ) {
+		if ( empty( $_POST['conditions'] ) ) {
+			return $instance;
+		}
+
 		$conditions = array();
 		$conditions['action'] = $_POST['conditions']['action'];
 		$conditions['rules'] = array();