diff --git a/includes/class-sp-calendar.php b/includes/class-sp-calendar.php
index 97525f81..16a72c7e 100644
--- a/includes/class-sp-calendar.php
+++ b/includes/class-sp-calendar.php
@@ -83,7 +83,7 @@ class SP_Calendar extends SP_Custom_Post {
 			$this->order = 'ASC';
 
 		if ( ! $this->orderby )
-			$this->orderby = get_post_meta( $this->ID, 'sp_orderby', true );
+			$this->orderby = 'post_date';
 
 		if ( ! $this->from )
 			$this->from = get_post_meta( $this->ID, 'sp_date_from', true );