diff --git a/helpers.inc.php b/helpers.inc.php
index c0af76d..c35ad7f 100644
--- a/helpers.inc.php
+++ b/helpers.inc.php
@@ -87,8 +87,6 @@ function find_files(string $dir, array $fnmatch_patterns = []) : array
   return $results;
 }
 
-
-//obsolete, use find_files instead
 function scan_files_rec(array $dirs, array $only_extensions = [], int $mode = 1) : array
 {
   $files = array();
@@ -168,7 +166,7 @@ function json_make_pretty(string $json) : string
   return prettyJSON($json);
 }
 
-function need_to_regen(string $file, array $deps, bool $debug = false) : bool
+function need_to_regen(string $file, iterable $deps, bool $debug = false) : bool
 {
   if(!is_file($file))
   {
@@ -1195,7 +1193,7 @@ function are_you_sure_ask() : bool
   return $resp == "YES";
 }
 
-function names_hash_changed(string $crc_file, array $names) : bool
+function names_hash_changed(string $crc_file, iterable $names) : bool
 {
   $ctx = hash_init('crc32');
   foreach($names as $name)