diff --git a/htdocs/compta/stats/casoc.php b/htdocs/compta/stats/casoc.php
index 0bef7ff555a..1df7ae4db62 100644
--- a/htdocs/compta/stats/casoc.php
+++ b/htdocs/compta/stats/casoc.php
@@ -179,6 +179,7 @@ $allparams = array_merge($commonparams, $headerparams, $tableparams);
 $headerparams = array_merge($commonparams, $headerparams);
 $tableparams = array_merge($commonparams, $tableparams);
 
+$paramslink="";
 foreach ($allparams as $key => $value) {
 	$paramslink .= '&'.$key.'='.$value;
 }
@@ -202,6 +203,9 @@ if ($modecompta == "BOOKKEEPINGCOLLECTED") {
 	$modecompta = "RECETTES-DEPENSES";
 }
 
+$exportlink="";
+$namelink="";
+
 // Show report header
 if ($modecompta == "CREANCES-DETTES") {
 	$name = $langs->trans("Turnover").', '.$langs->trans("ByThirdParties");