diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index 9a4bf4ec95..87ba0ae515 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -4006,9 +4006,6 @@ function send_nosniff_header() {
  */
 function _wp_mysql_week( $column ) {
 	switch ( $start_of_week = (int) get_option( 'start_of_week' ) ) {
-	default :
-	case 0 :
-		return "WEEK( $column, 0 )";
 	case 1 :
 		return "WEEK( $column, 1 )";
 	case 2 :
@@ -4017,6 +4014,9 @@ function _wp_mysql_week( $column ) {
 	case 5 :
 	case 6 :
 		return "WEEK( DATE_SUB( $column, INTERVAL $start_of_week DAY ), 0 )";
+	case 0 :
+	default :
+		return "WEEK( $column, 0 )";
 	}
 }