diff --git a/htdocs/core/lib/pdf.lib.php b/htdocs/core/lib/pdf.lib.php
index d9a6fea21315d58db4945b473895a87a05104793..8f9b7d44ada7889ba2ff2ed5cfabd793d671c006 100644
--- a/htdocs/core/lib/pdf.lib.php
+++ b/htdocs/core/lib/pdf.lib.php
@@ -602,6 +602,8 @@ function pdf_watermark(&$pdf, $outputlangs, $h, $w, $unit, $text)
  */
 function pdf_bank(&$pdf,$outputlangs,$curx,$cury,$account,$onlynumber=0,$default_font_size=10)
 {
+	require_once DOL_DOCUMENT_ROOT.'/core/class/FormBank.class.php';
+
 	global $mysoc, $conf;
 
 	$diffsizetitle=(empty($conf->global->PDF_DIFFSIZE_TITLE)?3:$conf->global->PDF_DIFFSIZE_TITLE);