diff --git a/htdocs/includes/modules/facture/pdf_crabe.modules.php b/htdocs/includes/modules/facture/pdf_crabe.modules.php
index ecb851d00d6..2818ad00705 100644
--- a/htdocs/includes/modules/facture/pdf_crabe.modules.php
+++ b/htdocs/includes/modules/facture/pdf_crabe.modules.php
@@ -1014,6 +1014,8 @@ class pdf_crabe extends ModelePDFFactures
 
 	    if ($conf->propal->enabled)
 		{
+			require_once(DOL_DOCUMENT_ROOT."/comm/propal/class/propal.class.php");
+			
 			$outputlangs->load('propal');
 			foreach($object->linked_object as $key => $val)
 			{
@@ -1038,6 +1040,8 @@ class pdf_crabe extends ModelePDFFactures
 	    // TODO mutualiser
 		if ($conf->commande->enabled)
 		{
+			require_once(DOL_DOCUMENT_ROOT."/commande/class/commande.class.php");
+			
 			$outputlangs->load('orders');
 			foreach($object->linked_object as $key => $val)
 			{
diff --git a/htdocs/includes/modules/facture/pdf_oursin.modules.php b/htdocs/includes/modules/facture/pdf_oursin.modules.php
index ad692301b43..e98f56be1b4 100644
--- a/htdocs/includes/modules/facture/pdf_oursin.modules.php
+++ b/htdocs/includes/modules/facture/pdf_oursin.modules.php
@@ -774,7 +774,7 @@ class pdf_oursin extends ModelePDFFactures
 	}
 
 	/*
-	 *   \brief      Affiche en-t�te facture
+	 *   \brief      Affiche en-tete facture
 	 *   \param      pdf     objet PDF
 	 *   \param      fac     objet facture
 	 */
@@ -980,6 +980,8 @@ class pdf_oursin extends ModelePDFFactures
 	    // TODO mutualiser
 	    if ($conf->propal->enabled)
 		{
+			require_once(DOL_DOCUMENT_ROOT."/comm/propal/class/propal.class.php");
+			
 			$outputlangs->load('propal');
 			foreach($object->linked_object as $key => $val)
 			{
@@ -1004,6 +1006,8 @@ class pdf_oursin extends ModelePDFFactures
 	    // TODO mutualiser
 		if ($conf->commande->enabled)
 		{
+			require_once(DOL_DOCUMENT_ROOT."/commande/class/commande.class.php");
+			
 			$outputlangs->load('orders');
 			foreach($object->linked_object as $key => $val)
 			{