diff --git a/opentech/apply/funds/urls.py b/opentech/apply/funds/urls.py
index f5662705d76a0a919dea3ac14da6d8642e468a45..0eceb57c2e59d38b3bd8036b5a875629b4f0d822 100644
--- a/opentech/apply/funds/urls.py
+++ b/opentech/apply/funds/urls.py
@@ -13,7 +13,7 @@ from .views import (
 
 revision_urls = ([
     path('', RevisionListView.as_view(), name='list'),
-    path('compare/<int:to>/<int:from>', RevisionCompareView.as_view(), name='compare'),
+    path('compare/<int:to>/<int:from>/', RevisionCompareView.as_view(), name='compare'),
 ], 'revisions')
 
 
diff --git a/opentech/apply/review/templates/review/review_detail.html b/opentech/apply/review/templates/review/review_detail.html
index f4ec8314fe922a408bd4c5038f5320b9fd89944a..54c1614e504842e1c7be2ae53958bb863ad77c72 100644
--- a/opentech/apply/review/templates/review/review_detail.html
+++ b/opentech/apply/review/templates/review/review_detail.html
@@ -18,6 +18,14 @@
         <h5>Score</h5>
         <p>{{ review.score }}</p>
     </div>
+    {% if review.revision != review.submission.live_revision %}
+        <div>
+            <h5>Review was not against the lasted version:</h5>
+            <p>
+                <a class="button button--primary" href="{% url "funds:submissions:revisions:compare" submission_pk=review.submission.id to=review.submission.live_revision.id from=review.revision.id %}">Compare</a>
+            </p>
+        </div>
+    {% endif %}
 </div>
 
 <div class="rich-text rich-text--answers">