diff --git a/b2calendar.php b/b2calendar.php
index 5c453d8762..35b5209bc1 100644
--- a/b2calendar.php
+++ b/b2calendar.php
@@ -56,6 +56,11 @@ require_once($abspath.$b2inc.'/b2template.functions.php');
 require_once($abspath.$b2inc.'/b2functions.php');
 require_once($abspath.$b2inc.'/b2vars.php');
 
+// Quick check. If we have no posts at all, abort!
+$gotsome = $wpdb->get_var("SELECT ID from $tableposts WHERE post_status = 'publish' AND post_category > 0 ORDER BY post_date DESC LIMIT 1");
+if (!$gotsome)
+	return;
+
 $w = $HTTP_GET_VARS['w'];
 if (isset($HTTP_GET_VARS['w'])) {
     $w = $HTTP_GET_VARS['w'];