diff --git a/htdocs/comm/propal/card.php b/htdocs/comm/propal/card.php
index 6b47d5205b6..06b5f5ac4a5 100644
--- a/htdocs/comm/propal/card.php
+++ b/htdocs/comm/propal/card.php
@@ -777,7 +777,7 @@ if (empty($reshook))
 								$pu_ht = price($prodcustprice->lines [0]->price);
 								$pu_ttc = price($prodcustprice->lines [0]->price_ttc);
 								$price_base_type = $prodcustprice->lines [0]->price_base_type;
-								$prod->tva_tx = $prodcustprice->lines [0]->tva_tx;
+								$tva_tx = $prodcustprice->lines [0]->tva_tx;
 							}
 						}
 					}