diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 0f49eebe26b..cecf472c14b 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -1996,7 +1996,7 @@ function dol_string_nounprintableascii($str, $removetabcrlf = 1)
 }
 
 /**
- *  Returns text slugified (no special char, separator is "-".
+ *  Returns text slugified (lowercase and no special char, separator is "-").
  *
  *  @param	string	$stringtoslugify		String to slugify
  *  @return string							Slugified string