diff --git a/lib/tests/behat/behat_hooks.php b/lib/tests/behat/behat_hooks.php
index e7f64f0b77f..6e2653f9ed6 100644
--- a/lib/tests/behat/behat_hooks.php
+++ b/lib/tests/behat/behat_hooks.php
@@ -193,6 +193,9 @@ class behat_hooks extends behat_base {
             behat_context_helper::set_session($session);
         }
 
+        // Reset mink session between the scenarios.
+        $session->reset();
+
         // Reset $SESSION.
         \core\session\manager::init_empty_session();
 
diff --git a/mod/wiki/tests/behat/wiki_comments.feature b/mod/wiki/tests/behat/wiki_comments.feature
index 4ffa1a1aed7..afd3b499c82 100644
--- a/mod/wiki/tests/behat/wiki_comments.feature
+++ b/mod/wiki/tests/behat/wiki_comments.feature
@@ -40,6 +40,7 @@ Feature: Users can comment on wiki pages
     And I set the following fields to these values:
       | Comment | student 1 original comment |
     And I press "Save"
+    And I wait to be redirected
 
   @javascript
   Scenario: Student can edit and delete their own comment