diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index ee2ef29f5a5..ca5e12f6ffd 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -4110,9 +4110,10 @@ function getCurrencySymbol($currency_code)
 if (! function_exists('getmypid'))
 {
     /**
-     * Return PID
+     * Return random PID
+     * Some web hosts disable this php function for security reasons
      *
-     * @return	void
+     * @return	int
      */
     function getmypid()
     {