diff --git a/htdocs/core/lib/pdf.lib.php b/htdocs/core/lib/pdf.lib.php
index e0c6c9ee0e0..3c56cfcae3d 100644
--- a/htdocs/core/lib/pdf.lib.php
+++ b/htdocs/core/lib/pdf.lib.php
@@ -269,7 +269,9 @@ function pdf_getPDFFontSize($outputlangs)
  */
 function pdf_getHeightForLogo($logo, $url = false)
 {
-	$height=22; $maxwidth=130;
+	global $conf;
+	$height=(empty($conf->global->MAIN_DOCUMENTS_LOGO_HEIGHT)?22:$conf->global->MAIN_DOCUMENTS_LOGO_HEIGHT); 
+	$maxwidth=130;
 	include_once DOL_DOCUMENT_ROOT.'/core/lib/images.lib.php';
 	$tmp=dol_getImageSize($logo, $url);
 	if ($tmp['height'])