diff --git a/agenda.module b/agenda.module
index 72cd315..8208ab4 100644
--- a/agenda.module
+++ b/agenda.module
@@ -183,7 +183,7 @@ function agenda_display_block($delta = 0) {
   $events = agenda_group_events_for_block($block, $events);
   // Render.
   if (count($events)) {
-    $output = theme('agenda_block', array('events' => $events, 'block' => $block));
+    $output = theme('agenda_block__'.$delta, array('events' => $events, 'block' => $block));
   }
   elseif (empty($block->noeventstext)) {
     $output = NULL;