diff --git a/src/z3c/rml/list.py b/src/z3c/rml/list.py
index 5549181..0f5164f 100644
--- a/src/z3c/rml/list.py
+++ b/src/z3c/rml/list.py
@@ -81,10 +81,13 @@ class OrderedListItem(ListItem):
 class IUnorderedListItem(IListItem):
     """An ordered list item."""
 
-    value = attr.Choice(
+    value = attr.Combination(
         title='Bullet Value',
         description='The type of bullet character.',
-        choices=interfaces.UNORDERED_BULLET_VALUES,
+        value_types=(
+            attr.Choice(choices=interfaces.UNORDERED_BULLET_VALUES),
+            attr.Text(max_length=1)
+        ),
         required=False)
 
 
diff --git a/src/z3c/rml/tests/input/rml-examples-046-lists.rml b/src/z3c/rml/tests/input/rml-examples-046-lists.rml
index 050d2ff..97378a0 100644
--- a/src/z3c/rml/tests/input/rml-examples-046-lists.rml
+++ b/src/z3c/rml/tests/input/rml-examples-046-lists.rml
@@ -155,6 +155,10 @@ symbol.</para>
 		<li><para style="normal">para 1</para></li>
 		<li><para style="normal">para 2</para><para style="normal">another paragraph</para></li>
 		<li value="circle" bulletColor="green"><para style="normal">para 3</para></li>
+		<li value="&#x274d;"><para style="normal">Disc</para></li>
+		<li value="rarrowhead"><para style="normal">Right arrow head</para></li>
+		<li value="&#x2022;"><para style="normal">Bullet, defined by unicode code point</para></li>
 	</ul>
+
 </story>
 </document>