diff --git a/harvard-bournemouth-university.csl b/harvard-bournemouth-university.csl
index 1f7c2dbfbc5..0bb99ab585e 100644
--- a/harvard-bournemouth-university.csl
+++ b/harvard-bournemouth-university.csl
@@ -9,12 +9,15 @@
     <author>
       <name>Sebastian Karcher</name>
     </author>
+    <contributor>
+      <name>Patrick O'Brien</name>
+    </contributor>
     <category citation-format="author-date"/>
     <category field="generic-base"/>
     <summary>Bournemouth University Harvard style based on based on the British Standards BS 5605:1990 Recommendations for citing and
     referencing published material and BS 1629:1989 Recommendations or references to
     published materials.</summary>
-    <updated>2021-05-31T12:00:00+00:00</updated>
+    <updated>2021-12-05T10:13:22+00:00</updated>
     <rights license="http://creativecommons.org/licenses/by-sa/3.0/">This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 License</rights>
   </info>
   <macro name="author">
@@ -329,7 +332,17 @@
       <key macro="issued" sort="ascending"/>
     </sort>
     <layout suffix=".">
-      <text macro="author" suffix=","/>
+      <choose>
+        <if match="any" variable="author">
+          <text macro="author" suffix=","/>
+        </if>
+        <else-if match="any" variable="editor">
+          <text macro="author"/>
+        </else-if>
+        <else>
+          <text macro="author" suffix=","/>
+        </else>
+      </choose>
       <group delimiter=". " prefix=" ">
         <text macro="issued"/>
         <text macro="title"/>