diff --git a/feedback/locale/fi/LC_MESSAGES/django.po b/feedback/locale/fi/LC_MESSAGES/django.po
index 7604075..00fa4b7 100644
--- a/feedback/locale/fi/LC_MESSAGES/django.po
+++ b/feedback/locale/fi/LC_MESSAGES/django.po
@@ -460,6 +460,10 @@ msgstr "Kopioi linkki tähän keskusteluun"
 msgid "The link was copied to the clipboard"
 msgstr "Linkki kopioitiin leikepöydälle"
 
+#: feedback/templates/manage/_exercise_heading.html
+msgid "Add deadline deviation"
+msgstr "Lisää määräajan poikkeama"
+
 #: feedback/templates/manage/_feedback_message.html
 msgid "This field was <b>not</b> required"
 msgstr "Tämä kenttä <b>ei</b> ollut pakollinen"
diff --git a/feedback/templates/manage/_exercise_heading.html b/feedback/templates/manage/_exercise_heading.html
index a979949..30c5c22 100644
--- a/feedback/templates/manage/_exercise_heading.html
+++ b/feedback/templates/manage/_exercise_heading.html
@@ -39,6 +39,16 @@
 		>
 			<span class="bi bi-link" aria-hidden="true"></span>
 		</button>
+		<a
+			class="btn btn-sm hover-btn"
+			data-bs-toggle="tooltip"
+			data-bs-trigger="hover"
+			data-bs-placement="top"
+			href="{{ conv.add_deadline_deviation_url }}"
+			title="{% trans 'Add deadline deviation' %}"
+		>
+			<span class="bi bi-clock" aria-hidden="true"></span>
+		</a>
 	</div>
 	<div class="feedback-context-container">
 		<div class="btn-toolbar float-end feedback-context">
diff --git a/feedback/views.py b/feedback/views.py
index 4593844..cce52b7 100644
--- a/feedback/views.py
+++ b/feedback/views.py
@@ -589,6 +589,10 @@ def get_conversation_dict(conv: Conversation, fbs: list[Feedback]) -> dict:
             'student_feedback_for_exercise_url': (
                 request.build_absolute_uri(get_all_student_feedbacks_for_exercise_url(conv))
             ),
+            'add_deadline_deviation_url': course.html_url + (
+                'teachers/deadline-deviations/add/?' + \
+                f'submitter={conv.student.api_id}&get_module_of_exercise={conv.exercise.api_id}'
+            ),
             'show_background': course_has_bg_questionnaire and student_may_have_bg_questionnaire(conv.student),
             'context_tags': context_tags,
             'conversation_tags': set(conv.tags.all()),