diff --git a/mod/assignment/type/online/assignment.class.php b/mod/assignment/type/online/assignment.class.php
index c873f524e18..3b5ba1d3eac 100644
--- a/mod/assignment/type/online/assignment.class.php
+++ b/mod/assignment/type/online/assignment.class.php
@@ -180,7 +180,7 @@ class assignment_online extends assignment_base {
         $newsubmission->mailed     = 0;       // Make sure mail goes out (again, even)
         $newsubmission->timemarked = time();
 
-        $newsubmission->data1      = addslashes($newsubmission->data1);
+        unset($newsubmission->data1);  // Don't need to update this.
 
         if (! update_record('assignment_submissions', $newsubmission)) {
             return false;