diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index cc06786e6021896eabb5fb34630e3eb890998225..f2462b617236c6ffb4f84f119e55751d77e18a63 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -2905,7 +2905,7 @@ function price($amount, $form=0, $outlangs='', $trunc=1, $rounding=-1, $forcerou
  *									'MT'=Round to Max for totals with Tax (MAIN_MAX_DECIMALS_TOT)
  *									'MS'=Round to Max Shown (MAIN_MAX_DECIMALS_SHOWN)
  * 	@param	int		$alreadysqlnb	Put 1 if you know that content is already universal format number
- *	@return	string					Amount with universal numeric format (Example: '99.99999')
+ *	@return	string					Amount with universal numeric format (Example: '99.99999') or unchanged text if conversion fails.
  *
  *	@see    price					Opposite function of price2num
  */