diff --git a/C4/Search.pm b/C4/Search.pm
index 1389e5b3ec..4f2a7c72e3 100644
--- a/C4/Search.pm
+++ b/C4/Search.pm
@@ -1133,6 +1133,7 @@ sub getIndexes{
                     'Date-of-publication',
                     'Dewey-classification',
                     'Dissertation-information',
+                    'diss',
                     'EAN',
                     'extent',
                     'fic',
diff --git a/etc/zebradb/ccl.properties b/etc/zebradb/ccl.properties
index 99e3498e4b..4b3241c71e 100644
--- a/etc/zebradb/ccl.properties
+++ b/etc/zebradb/ccl.properties
@@ -360,6 +360,7 @@ Date/time-last-modified       1=1012
 #                           publication connected with an
 #                           academic degree.
 Dissertation-information 1=1056
+diss Dissertation-information
 
 #EAN                  1214  European article number         UNIMARC 073
 EAN 1=1214
diff --git a/etc/zebradb/marc_defs/marc21/biblios/biblio-koha-indexdefs.xml b/etc/zebradb/marc_defs/marc21/biblios/biblio-koha-indexdefs.xml
index 8ad9db1907..101f6ff475 100644
--- a/etc/zebradb/marc_defs/marc21/biblios/biblio-koha-indexdefs.xml
+++ b/etc/zebradb/marc_defs/marc21/biblios/biblio-koha-indexdefs.xml
@@ -529,6 +529,8 @@
   <!--record.abs line 147: melm 502        Material-type-->
   <index_data_field tag="502">
     <target_index>Material-type:w</target_index>
+    <target_index>Dissertation-information:p</target_index>
+    <target_index>Dissertation-information:w</target_index>
   </index_data_field>
   <!--record.abs line 148: melm 505$r      Author-->
   <index_subfields tag="505" subfields="r">
diff --git a/etc/zebradb/marc_defs/marc21/biblios/biblio-zebra-indexdefs.xsl b/etc/zebradb/marc_defs/marc21/biblios/biblio-zebra-indexdefs.xsl
index a0f68f1e1f..3dd627ffc5 100644
--- a/etc/zebradb/marc_defs/marc21/biblios/biblio-zebra-indexdefs.xsl
+++ b/etc/zebradb/marc_defs/marc21/biblios/biblio-zebra-indexdefs.xsl
@@ -1944,7 +1944,7 @@ definition file (probably something like {biblio,authority}-koha-indexdefs.xml)
     </z:index>
   </xslo:template>
   <xslo:template mode="index_data_field" match="marc:datafield[@tag='502']">
-    <z:index name="Material-type:w">
+    <z:index name="Material-type:w Dissertation-information:p Dissertation-information:w">
       <xslo:variable name="raw_heading">
         <xslo:for-each select="marc:subfield">
           <xslo:if test="position() &gt; 1">