diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index f39302f772..fcbe86e5b3 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -4242,7 +4242,7 @@ function get_file_data( $file, $default_headers, $context = '' ) {
 
 
 	foreach ( $all_headers as $field => $regex ) {
-		preg_match( '/' . preg_quote( $regex, '/' ) . ':(.*)$/mi', $file_data, ${$field});
+		preg_match( '/^[\s\/*#]*' . preg_quote( $regex, '/' ) . ':(.*)$/mi', $file_data, ${$field});
 		if ( !empty( ${$field} ) )
 			${$field} = _cleanup_header_comment( ${$field}[1] );
 		else