diff --git a/koha-tmpl/intranet-tmpl/prog/en/data/marc21_field_006.xml b/koha-tmpl/intranet-tmpl/prog/en/data/marc21_field_006.xml
index 7aec5a8a9e..9666c7cbbd 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/data/marc21_field_006.xml
+++ b/koha-tmpl/intranet-tmpl/prog/en/data/marc21_field_006.xml
@@ -192,7 +192,7 @@
       <Value code="z"><description>Other</description></Value>
       <Value code="|"><description>No attempt to code</description></Value>
     </Position>
-    <Position pos="12-18"><name>Undefined</name><description>Six undefined character positions; each contains a blank (#) or a fill character (|).</description></Position>
+    <Position pos="12-17"><name>Undefined</name><description>Six undefined character positions; each contains a blank (#) or a fill character (|).</description></Position>
   </Material>
   <Material id="MP"><name>Maps</name><description></description>
     <Position pos="00"><name>Form of material</name><description></description>