diff --git a/src/main/twirl/gitbucket/core/helper/preview.scala.html b/src/main/twirl/gitbucket/core/helper/preview.scala.html
index 7bfe683..8049513 100644
--- a/src/main/twirl/gitbucket/core/helper/preview.scala.html
+++ b/src/main/twirl/gitbucket/core/helper/preview.scala.html
@@ -57,6 +57,7 @@
       enableTaskList   : @enableTaskList
     }, function(data){
       $('#preview-area@uid').html(data);
+      $('#preview-area@uid input').prop('disabled', true);
       prettyPrint();
     });
   });