diff --git a/question/format.php b/question/format.php
index a9f1bc5593b..e6865264f61 100644
--- a/question/format.php
+++ b/question/format.php
@@ -316,7 +316,7 @@ class qformat_default {
             }
 
             // Give the question a unique version stamp determined by question_hash()
-            $DB->set_field('question', 'version', question_hash($question), array('id', $question->id));
+            $DB->set_field('question', 'version', question_hash($question), array('id'=>$question->id));
         }
         return true;
     }