diff --git a/mod/quiz/lib.php b/mod/quiz/lib.php
index 7c4df55c313..2d9c3738a41 100644
--- a/mod/quiz/lib.php
+++ b/mod/quiz/lib.php
@@ -92,7 +92,7 @@ function quiz_add_instance($quiz) {
         }
     }
     $quiz->name = trim($quiz->name);
-
+    $quiz->timelimit = round($quiz->timelimit);
     if (!$quiz->id = insert_record("quiz", $quiz)) {
         return false;  // some error occurred
     }