diff --git a/atlas/templates/atlas/collection_case_view_take.html b/atlas/templates/atlas/collection_case_view_take.html
index 63303bbf..093c1597 100644
--- a/atlas/templates/atlas/collection_case_view_take.html
+++ b/atlas/templates/atlas/collection_case_view_take.html
@@ -49,7 +49,7 @@
 
     {% if collection.show_ohif_viewer %}
         <div>
-            <iframe id="viewer" style="width: 100%; height: 100%; border: none; padding: 0px;" src="/ohif/viewer/dicomjson?url=https://www.penracourses.org.uk{% url 'atlas:collection_case_dicom_json' collection.pk case.pk %}"></iframe>
+            <iframe id="viewer" style="width: 100%; height: 100%; border: none; padding: 0px; min-height: 700px" src="/ohif/viewer/dicomjson?url=https://www.penracourses.org.uk{% url 'atlas:collection_case_dicom_json' collection.pk case.pk %}"></iframe>
         </div>
     {% endif %}