diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 19e6e6c8b81..a311c78b496 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -2920,7 +2920,7 @@ function get_localtax($tva, $local, $thirdparty_buyer="", $thirdparty_seller="")
  *  Instead this function must be called when adding a line to get (array of localtax and type) and
  *  provide it to the function calcul_price_total.
  *
- *  @param		real	$vatrate			VAT Rate
+ *  @param		float	$vatrate			VAT Rate
  *  @param		int		$local              Number of localtax (1 or 2, or 0 to return 1 & 2)
  *  @param		int		$thirdparty         Company object
  *  @return		array    	  				array(localtax_type1(1-6 / 0 if not found), rate of localtax1, ...)