diff --git a/howard-hughes-medical-institute.csl b/howard-hughes-medical-institute.csl
index b89783be91..450db4fef2 100644
--- a/howard-hughes-medical-institute.csl
+++ b/howard-hughes-medical-institute.csl
@@ -83,8 +83,7 @@
   </citation>
   <bibliography hanging-indent="true" entry-spacing="0" line-spacing="1">
     <sort>
-      <key macro="author"/>
-      <key macro="issued" sort="descending"/>
+      <key variable="citation-number"/>
     </sort>
     <layout>
       <text variable="citation-number" suffix=". "/>