diff --git a/submit.php b/submit.php
index 66048c5..fe7bfb3 100644
--- a/submit.php
+++ b/submit.php
@@ -300,18 +300,21 @@ foreach ($_POST['description'] as $key => $val) {
 }
 
 //var_dump($pdfs);
+//
+$resultnam = tempnam("/tmp","karesult");
+
 
 $cmd = "$CONVERT_CMD";
 foreach ($pdfs as $filename){
 	$cmd .= " $filename";
 }
-$cmd .= " cat output /tmp/result.pdf";
+$cmd .= " cat output $resultnam.pdf";
 exec ($cmd);
 //var_dump($_POST);
 
 #echo "CMD: $cmd<br>";
 #die;
-$file = "/tmp/result.pdf";
+$file = "$resultnam.pdf";
 header('Content-Disposition: attachment; filename="'. basename($file) . '"');
 header('Content-Length: ' . filesize($file));
 readfile($file);