diff --git a/lib/editor/atto/plugins/accessibilitychecker/tests/behat/accessibilitychecker.feature b/lib/editor/atto/plugins/accessibilitychecker/tests/behat/accessibilitychecker.feature
index c456bc6c32a..a861bd85f67 100644
--- a/lib/editor/atto/plugins/accessibilitychecker/tests/behat/accessibilitychecker.feature
+++ b/lib/editor/atto/plugins/accessibilitychecker/tests/behat/accessibilitychecker.feature
@@ -6,10 +6,25 @@ Feature: Atto accessibility checker
   Scenario: Images with no alt
     Given I log in as "admin"
     And I navigate to "Edit profile" node in "My profile settings"
-    And I set the field "Description" to "<p>Some plain text</p><img src='/broken-image'/><p>Some more text</p>"
+    And I set the field "Description" to "<p>Some plain text</p><img src='/broken-image' width='1' height='1'/><p>Some more text</p>"
     When I click on "Show more buttons" "button"
     And I click on "Accessibility checker" "button"
     Then I should see "Images require alternative text."
+    And I follow "/broken-image"
+    And I wait "2" seconds
+    And I click on "Image" "button"
+    And the field "Enter URL" matches value "/broken-image"
+    And I set the field "Describe this image" to "No more warning!"
+    And I press "Save image"
+    And I press "Accessibility checker"
+    And I should see "Congratulations, no accessibility problems found!"
+    And I select the text in the "Description" Atto editor
+    And I click on "Image" "button"
+    And I set the field "Describe this image" to ""
+    And I set the field "Description not necessary" to "1"
+    And I press "Save image"
+    And I press "Accessibility checker"
+    And I should see "Congratulations, no accessibility problems found!"
 
   @javascript
   Scenario: Low contrast