diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index a22a9675ff6..78010725086 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -4261,7 +4261,8 @@ function get_localtax($vatrate, $local, $thirdparty_buyer="", $thirdparty_seller
 
 		if ($local == 2)
 		{
-			if (! $mysoc->localtax2_assuj || (string) $vatratecleaned == "0") return 0;
+			//if (! $mysoc->localtax2_assuj || (string) $vatratecleaned == "0") return 0;
+			if (! $mysoc->localtax2_assuj) return 0;		// If main vat is 0, IRPF may be different than 0.
 			if ($thirdparty_seller->id == $mysoc->id)
 			{
 				if (! $thirdparty_buyer->localtax2_assuj) return 0;