diff --git a/acta-pharmaceutica.csl b/acta-pharmaceutica.csl
index 25d0c5e589..5b1c90d403 100644
--- a/acta-pharmaceutica.csl
+++ b/acta-pharmaceutica.csl
@@ -238,22 +238,6 @@
       </if>
     </choose>
   </macro>
-  <macro name="issued-sort">
-    <choose>
-      <if type="article-journal bill book chapter graphic legal_case legislation motion_picture paper-conference report song" match="none">
-        <date variable="issued">
-          <date-part name="year"/>
-          <date-part name="month"/>
-          <date-part name="day"/>
-        </date>
-      </if>
-      <else>
-        <date variable="issued">
-          <date-part name="year"/>
-        </date>
-      </else>
-    </choose>
-  </macro>
   <macro name="issued-year">
     <choose>
       <if variable="issued">
@@ -381,11 +365,8 @@
     </layout>
   </citation>
   <bibliography hanging-indent="true" et-al-min="8" et-al-use-first="7" entry-spacing="0" line-spacing="2">
-    <sort>
-      <key macro="author"/>
-      <key macro="issued-sort" sort="ascending"/>
-    </sort>
     <layout>
+      <text variable="citation-number" suffix="."/>
       <group suffix=".">
         <group delimiter=". " suffix=", ">
           <text macro="author"/>