diff --git a/htdocs/core/lib/pdf.lib.php b/htdocs/core/lib/pdf.lib.php
index 2e8d286fc26..d38d6d3f3ca 100644
--- a/htdocs/core/lib/pdf.lib.php
+++ b/htdocs/core/lib/pdf.lib.php
@@ -874,9 +874,10 @@ function pdf_pagefoot(&$pdf, $outputlangs, $paramfreetext, $fromcompany, $marge_
 
 	$dims=$pdf->getPageDimensions();
 
-	if ( ! empty($conf->global->$paramfreetext."_".$outputlangs->defaultlang) )
+	$paramfreetextlang = $paramfreetext."_".$outputlangs->defaultlang;
+	if ( ! empty($conf->global->$paramfreetextlang) )
 	{
-		$paramfreetext .= "_".$outputlangs->defaultlang;
+		$paramfreetext = $paramfreetextlang;
 	}
 
 	// Line of free text