diff --git a/brain.csl b/brain.csl
index 2e015f1f67f..b7a5e933c1f 100644
--- a/brain.csl
+++ b/brain.csl
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<style xmlns="http://purl.org/net/xbiblio/csl" class="in-text" version="1.0" demote-non-dropping-particle="sort-only" default-locale="en-GB">
+<style xmlns="http://purl.org/net/xbiblio/csl" class="in-text" version="1.0" demote-non-dropping-particle="sort-only" page-range-format="minimal" default-locale="en-GB">
   <info>
     <title>Brain</title>
     <id>http://www.zotero.org/styles/brain</id>