diff --git a/includes/admin/post-types/meta-boxes/class-sp-meta-box-calendar-data.php b/includes/admin/post-types/meta-boxes/class-sp-meta-box-calendar-data.php
index e37d4238..3ce8f626 100644
--- a/includes/admin/post-types/meta-boxes/class-sp-meta-box-calendar-data.php
+++ b/includes/admin/post-types/meta-boxes/class-sp-meta-box-calendar-data.php
@@ -39,8 +39,11 @@ class SP_Meta_Box_Calendar_Data {
 		$title_format = get_option( 'sportspress_event_list_title_format', 'title' );
 		$time_format = get_option( 'sportspress_event_list_time_format', 'combined' );
 
-		if ( is_array( $usecolumns ) )
+		if ( is_array( $usecolumns ) ) {
 			$usecolumns = array_filter( $usecolumns );
+		}else{
+			$usecolumns = array();
+		}
 		?>
 		<div class="sp-data-table-container">
 			<table class="widefat sp-data-table sp-calendar-table">
@@ -272,4 +275,4 @@ class SP_Meta_Box_Calendar_Data {
 		</div>
 		<?php
 	}
-}
\ No newline at end of file
+}