diff --git a/htdocs/core/modules/commande/doc/pdf_einstein.modules.php b/htdocs/core/modules/commande/doc/pdf_einstein.modules.php
index ab84897a810..bb1fd411b1f 100644
--- a/htdocs/core/modules/commande/doc/pdf_einstein.modules.php
+++ b/htdocs/core/modules/commande/doc/pdf_einstein.modules.php
@@ -376,8 +376,8 @@ class pdf_einstein extends ModelePDFCommandes
 
 					// TODO : store local taxes types into object lines and remove this
 					$localtaxtmp_array=getLocalTaxesFromRate($vatrate,0,$mysoc);
-					if (! isset($localtax1_type)) $localtax1_type = $localtaxtmp_array[0];
-					if (! isset($localtax2_type)) $localtax2_type = $localtaxtmp_array[2];
+					if ((! isset($localtax1_type)) || $localtax1_type=='') $localtax1_type = $localtaxtmp_array[0];
+					if ((! isset($localtax2_type)) || $localtax2_type=='') $localtax2_type = $localtaxtmp_array[2];
 					//end TODO
 
 				    // retrieve global local tax
diff --git a/htdocs/core/modules/facture/doc/pdf_crabe.modules.php b/htdocs/core/modules/facture/doc/pdf_crabe.modules.php
index b9492ac3b72..a5ee3d3d045 100755
--- a/htdocs/core/modules/facture/doc/pdf_crabe.modules.php
+++ b/htdocs/core/modules/facture/doc/pdf_crabe.modules.php
@@ -378,8 +378,8 @@ class pdf_crabe extends ModelePDFFactures
 
 					// TODO : store local taxes types into object lines and remove this
 					$localtaxtmp_array=getLocalTaxesFromRate($vatrate,0,$mysoc);
-					if (! isset($localtax1_type)) $localtax1_type = $localtaxtmp_array[0];
-					if (! isset($localtax2_type)) $localtax2_type = $localtaxtmp_array[2];
+					if ((! isset($localtax1_type)) || $localtax1_type=='') $localtax1_type = $localtaxtmp_array[0];
+					if ((! isset($localtax2_type)) || $localtax2_type=='') $localtax2_type = $localtaxtmp_array[2];
 					//end TODO
 						
 				    // retrieve global local tax
diff --git a/htdocs/core/modules/propale/doc/pdf_azur.modules.php b/htdocs/core/modules/propale/doc/pdf_azur.modules.php
index 0a0555df6a4..0424409ef22 100644
--- a/htdocs/core/modules/propale/doc/pdf_azur.modules.php
+++ b/htdocs/core/modules/propale/doc/pdf_azur.modules.php
@@ -374,8 +374,8 @@ class pdf_azur extends ModelePDFPropales
 					
 					// TODO : store local taxes types into object lines and remove this
 					$localtaxtmp_array=getLocalTaxesFromRate($vatrate,0,$mysoc);
-					if (! isset($localtax1_type)) $localtax1_type = $localtaxtmp_array[0];
-					if (! isset($localtax2_type)) $localtax2_type = $localtaxtmp_array[2];
+					if ((! isset($localtax1_type)) || $localtax1_type=='') $localtax1_type = $localtaxtmp_array[0];
+					if ((! isset($localtax2_type)) || $localtax2_type=='') $localtax2_type = $localtaxtmp_array[2];
 					//end TODO
 
 				    // retrieve global local tax