diff --git a/wp-admin/includes/template.php b/wp-admin/includes/template.php
index c10402a488..ad42074dcc 100644
--- a/wp-admin/includes/template.php
+++ b/wp-admin/includes/template.php
@@ -756,7 +756,7 @@ function wp_dropdown_roles( $selected = false ) {
 	$p = '';
 	$r = '';
 
-	$editable_roles = get_editable_roles();
+	$editable_roles = array_reverse( get_editable_roles() );
 
 	foreach ( $editable_roles as $role => $details ) {
 		$name = translate_user_role($details['name'] );
diff --git a/wp-includes/capabilities.php b/wp-includes/capabilities.php
index 789a9dd197..75a834b4f8 100644
--- a/wp-includes/capabilities.php
+++ b/wp-includes/capabilities.php
@@ -193,6 +193,9 @@ class WP_Roles {
 
 		if ( $this->use_db )
 			update_option( $this->role_key, $this->roles );
+
+		if ( get_option( 'default_role' ) == $role )
+			update_option( 'default_role', 'subscriber' );
 	}
 
 	/**
diff --git a/wp-includes/formatting.php b/wp-includes/formatting.php
index e7b752d710..904c99b17b 100644
--- a/wp-includes/formatting.php
+++ b/wp-includes/formatting.php
@@ -2957,6 +2957,11 @@ function sanitize_option($option, $value) {
 			$value = esc_url_raw( $value );
 			$value = str_replace( 'http://', '', $value );
 			break;
+
+		case 'default_role' :
+			if ( ! get_role( $value ) && get_role( 'subscriber' ) )
+				$value = 'subscriber';
+			break;
 	}
 
 	$value = apply_filters("sanitize_option_{$option}", $value, $option);