diff --git a/htdocs/includes/modules/facture/pdf_tourteau.modules.php b/htdocs/includes/modules/facture/pdf_tourteau.modules.php
index 7c341891bcb..dff3f171f44 100644
--- a/htdocs/includes/modules/facture/pdf_tourteau.modules.php
+++ b/htdocs/includes/modules/facture/pdf_tourteau.modules.php
@@ -266,6 +266,10 @@ Class pdf_tourteau {
 	      
 	    }
 	}
+      else
+	{
+	  print "FAC_OUTPUTDIR non définit !";
+	}
     }
 }