diff --git a/museum-national-dhistoire-naturelle.csl b/museum-national-dhistoire-naturelle.csl
index 5116d398ef..49ee3c21ce 100644
--- a/museum-national-dhistoire-naturelle.csl
+++ b/museum-national-dhistoire-naturelle.csl
@@ -192,7 +192,7 @@
   <macro name="genre">
     <group prefix=" " suffix=". ">
       <text variable="genre"/>
-      <text variable="number" prefix=" No. "/>
+      <text variable="number" prefix="N&ordm;"/>
     </group>
   </macro>
   <macro name="event">