diff --git a/wp-includes/pluggable.php b/wp-includes/pluggable.php
index 595d102c82..8fb04d3376 100644
--- a/wp-includes/pluggable.php
+++ b/wp-includes/pluggable.php
@@ -102,9 +102,6 @@ if ( !function_exists('get_userdata') ) :
  */
 function get_userdata( $user_id ) {
 	global $wpdb;
-
-	if ( ! is_numeric( $user_id ) )
-		return false;
 		
 	$user_id = absint( $user_id );
 	if ( ! $user_id )