diff --git a/htdocs/core/modules/commande/doc/pdf_einstein.modules.php b/htdocs/core/modules/commande/doc/pdf_einstein.modules.php
index 2dbd0bbea8e..899ea1c69b4 100644
--- a/htdocs/core/modules/commande/doc/pdf_einstein.modules.php
+++ b/htdocs/core/modules/commande/doc/pdf_einstein.modules.php
@@ -627,7 +627,7 @@ class pdf_einstein extends ModelePDFCommandes
 		$this->atleastoneratenotnull=0;
 		if (empty($conf->global->MAIN_GENERATE_DOCUMENTS_WITHOUT_VAT))
 		{
-			$tvaisnull=((! empty($this->tva) && count($this->tva) == 1 && $this->tva['0.000'] == (float) 0) ? true : false);
+			$tvaisnull=((! empty($this->tva) && count($this->tva) == 1 && is_float($this->tva['0.000'])) ? true : false);
 			if (! empty($conf->global->MAIN_GENERATE_DOCUMENTS_WITHOUT_VAT_ISNULL) && $tvaisnull)
 			{
 				// Nothing to do
diff --git a/htdocs/core/modules/facture/doc/pdf_crabe.modules.php b/htdocs/core/modules/facture/doc/pdf_crabe.modules.php
index 175ce45e26c..59a5275e023 100755
--- a/htdocs/core/modules/facture/doc/pdf_crabe.modules.php
+++ b/htdocs/core/modules/facture/doc/pdf_crabe.modules.php
@@ -743,7 +743,8 @@ class pdf_crabe extends ModelePDFFactures
 		$this->atleastoneratenotnull=0;
 		if (empty($conf->global->MAIN_GENERATE_DOCUMENTS_WITHOUT_VAT))
 		{
-			$tvaisnull=((! empty($this->tva) && count($this->tva) == 1 && $this->tva['0.000'] == (float) 0) ? true : false);
+
+			$tvaisnull=((! empty($this->tva) && count($this->tva) == 1 && is_float($this->tva['0.000'])) ? true : false);
 			if (! empty($conf->global->MAIN_GENERATE_DOCUMENTS_WITHOUT_VAT_ISNULL) && $tvaisnull)
 			{
 				// Nothing to do
diff --git a/htdocs/core/modules/propale/doc/pdf_azur.modules.php b/htdocs/core/modules/propale/doc/pdf_azur.modules.php
index 984e6ad32c2..dd55cf728f9 100644
--- a/htdocs/core/modules/propale/doc/pdf_azur.modules.php
+++ b/htdocs/core/modules/propale/doc/pdf_azur.modules.php
@@ -640,7 +640,7 @@ class pdf_azur extends ModelePDFPropales
 		$this->atleastoneratenotnull=0;
 		if (empty($conf->global->MAIN_GENERATE_DOCUMENTS_WITHOUT_VAT))
 		{
-			$tvaisnull=((! empty($this->tva) && count($this->tva) == 1 && $this->tva['0.000'] == (float) 0) ? true : false);
+			$tvaisnull=((! empty($this->tva) && count($this->tva) == 1 && is_float($this->tva['0.000'])) ? true : false);
 			if (! empty($conf->global->MAIN_GENERATE_DOCUMENTS_WITHOUT_VAT_ISNULL) && $tvaisnull)
 			{
 				// Nothing to do