diff --git a/.ci/run-safety.sh b/.ci/run-safety.sh
index 207f1ec97..0634eb362 100644
--- a/.ci/run-safety.sh
+++ b/.ci/run-safety.sh
@@ -14,6 +14,7 @@
 # 51457: not calling py in a safety-related manner
 # 65213: nonsense according to
 #    https://github.com/pyca/pyopenssl/issues/1300
+# 67599: pip issue, utter nonsense
 poetry run safety check \
         -i 38678 \
         -i 39253 \
@@ -28,4 +29,5 @@ poetry run safety check \
         -i 51499 \
         -i 51457 \
         -i 65213 \
+        -i 67599 \
         --full-report
diff --git a/course/models.py b/course/models.py
index a6a639ef9..8ba7057fb 100644
--- a/course/models.py
+++ b/course/models.py
@@ -1844,7 +1844,7 @@ def stringify_state(self):
                     result += " (/%d)" % len(self.valid_percentages)
                 return result
             else:
-                return "- ∅ -"
+                return "∅"
         else:
             return _("(other state)")
 
diff --git a/course/page/upload.py b/course/page/upload.py
index 69786786f..d1f6588a8 100644
--- a/course/page/upload.py
+++ b/course/page/upload.py
@@ -175,7 +175,9 @@ def __init__(self, vctx, location, page_desc):
                     % {"value": str(page_desc.maximum_megabytes)}))
 
         if vctx is not None:
-            if not hasattr(page_desc, "value"):
+            if (
+                    not hasattr(page_desc, "value")
+                    and not getattr(page_desc, "is_optional_page", True)):
                 vctx.add_warning(location, _("upload question does not have "
                         "assigned point value"))
 
diff --git a/course/templates/course/gradebook-by-opp.html b/course/templates/course/gradebook-by-opp.html
index eed8b156e..ef7b91634 100644
--- a/course/templates/course/gradebook-by-opp.html
+++ b/course/templates/course/gradebook-by-opp.html
@@ -170,7 +170,7 @@ <h3 class="start-well-title">{% trans "Modify many sessions at once" %}</h3>
                 {% if grade != None and grade.percentage != None %}
                   {{ grade.percentage|floatformat:"-2" }}%
                 {% else %}
-                  - &#8709; -
+                  &empty;
                 {% endif %}
               </a>
             {% endif %}
diff --git a/doc/page-types.rst b/doc/page-types.rst
index ef8899866..f3c8ca34b 100644
--- a/doc/page-types.rst
+++ b/doc/page-types.rst
@@ -50,8 +50,10 @@ The following page types are predefined:
 .. |is-optional-page-attr| replace::
 
     Optional. A Boolean value indicating whether the page is an optional page
-    which does not require answer for full completion of the flow.  If
-    ``true``, the attribute *value* should not present. Defaults to ``false``
+    which does not require answer for full completion of the flow.
+    This also affects grading: Grades will not be computed for flows
+    with non-optional pages, even if those pages have no point value.
+    If ``true``, the attribute *value* should not be present. Defaults to ``false``
     if not present.  Note that ``is_optional_page: true`` differs from ``value:
     0`` in that finishing flows with unanswered page(s) with the latter will be
     warned of "unanswered question(s)", while with the former won't. When using