diff --git a/api/controllers/wxapp/liche/Contract.php b/api/controllers/wxapp/liche/Contract.php
index 753c706b..2774ef98 100644
--- a/api/controllers/wxapp/liche/Contract.php
+++ b/api/controllers/wxapp/liche/Contract.php
@@ -101,7 +101,7 @@ class Contract extends Wxapp{
         //pdf转图片 
         $pdf_url = http_host_com('api').'/'.$row['file'];
         $this->load->library('pdf');
-        $pdf = new Pdf(true);
+        $pdf = new Pdf();
         $imgs = $pdf->pdf2img($pdf_url);
         if(!$imgs){
             throw new Exception('签名失败,图片转换失败', API_CODE_INVILD_PARAM);