diff --git boxes.module boxes.module
index cff3316..d95603d 100644
--- boxes.module
+++ boxes.module
@@ -81,6 +81,8 @@ function boxes_block_info() {
   $blocks = array();
   foreach ($boxes as $box) {
     $blocks[$box->delta]['info'] = $box->description;
+    //Let context group the instances togeather
+    $blocks[$box->delta]['context_group'] = "boxes_{$box->plugin_key}";
     // Not worth caching.
     $blocks[$box->delta]['cache'] = DRUPAL_CACHE_CUSTOM;
   }