diff --git a/frontiers-medical-journals.csl b/frontiers-medical-journals.csl
index 10d15731440b..ed71f432da94 100644
--- a/frontiers-medical-journals.csl
+++ b/frontiers-medical-journals.csl
@@ -132,7 +132,7 @@
             <date variable="issued" prefix=" (" suffix=")">
               <date-part name="year"/>
             </date>
-            <text variable="volume" font-weight="bold" suffix=":"/>
+            <text variable="volume" suffix=":"/>
           </group>
           <text variable="page" suffix="."/>
         </else>