diff --git a/data/jats.csl b/data/jats.csl
index dc1f154a8..adb364400 100644
--- a/data/jats.csl
+++ b/data/jats.csl
@@ -26,8 +26,8 @@
     <text variable="citation-number" prefix="{{jats}}id=&quot;ref-{{/jats}}" suffix="{{jats}}&quot;&gt;{{/jats}}"/>
   </macro>
   <macro name="author">
-    <names variable="author">
-        <name prefix="{{jats}}&lt;name&gt;{{/jats}}" suffix="{{jats}}&lt;/name&gt;{{/jats}}" name-as-sort-order="all" sort-separator="">
+    <names variable="author" delimiter=" ">
+        <name prefix="{{jats}}&lt;name&gt;{{/jats}}" suffix="{{jats}}&lt;/name&gt;{{/jats}}" name-as-sort-order="all" sort-separator=" ">
             <name-part name="family" text-case="capitalize-first" prefix="{{jats}}&lt;surname&gt;{{/jats}}" suffix="{{jats}}&lt;/surname&gt;{{/jats}}"/>
             <name-part name="given" text-case="capitalize-first" prefix="{{jats}}&lt;given-names&gt;{{/jats}}" suffix="{{jats}}&lt;/given-names&gt;{{/jats}}"/>
       </name>