diff --git a/htdocs/product/class/productcustomerprice.class.php b/htdocs/product/class/productcustomerprice.class.php
index a9444d1c569..64db4a4eb55 100644
--- a/htdocs/product/class/productcustomerprice.class.php
+++ b/htdocs/product/class/productcustomerprice.class.php
@@ -135,7 +135,7 @@ class Productcustomerprice extends CommonObject
 			$this->price_base_type = trim($this->price_base_type);
 		}
 		if (isset($this->tva_tx)) {
-			$this->tva_tx = trim($this->tva_tx);
+			$this->tva_tx = (float) $this->tva_tx;
 		}
 		if (isset($this->recuperableonly)) {
 			$this->recuperableonly = trim($this->recuperableonly);
@@ -621,7 +621,7 @@ class Productcustomerprice extends CommonObject
 			$this->price_base_type = trim($this->price_base_type);
 		}
 		if (isset($this->tva_tx)) {
-			$this->tva_tx = trim($this->tva_tx);
+			$this->tva_tx = (float) $this->tva_tx;
 		}
 		if (isset($this->recuperableonly)) {
 			$this->recuperableonly = trim($this->recuperableonly);