diff --git a/htdocs/core/modules/action/rapport.pdf.php b/htdocs/core/modules/action/rapport.pdf.php
index d595dfe5579..fcbff330822 100644
--- a/htdocs/core/modules/action/rapport.pdf.php
+++ b/htdocs/core/modules/action/rapport.pdf.php
@@ -165,6 +165,8 @@ class CommActionRapport
 	 */
 	function _pages(&$pdf, $outputlangs)
 	{
+		global $conf;
+
 		$height=3;		// height for text separation
 		$pagenb=1;