diff --git a/plugins/CoreHome/templates/datatable_cell.twig b/plugins/CoreHome/templates/datatable_cell.twig
index dab9a6401d9918888d36b66159c95fb6ccac2ef5..d18db8c56961763d63fbb35f55581366d7c4f482 100644
--- a/plugins/CoreHome/templates/datatable_cell.twig
+++ b/plugins/CoreHome/templates/datatable_cell.twig
@@ -1,4 +1,4 @@
-{% set tooltipIndex %}{{ column }}_tooltip{% endset %}
+{% set tooltipIndex = column ~ '_tooltip' %}
 {% if row.metadata[tooltipIndex] is defined %}<span class="cell-tooltip" data-tooltip="{{ row.metadata[tooltipIndex] }}">{% endif %}
 {% if not row.idsubdatatable and column=='label' and row.metadata.url is not empty %}
     <a target="_blank" href='{% if row.metadata.url|slice(0,4) not in ['http','ftp:'] %}http://{% endif %}{{ row.metadata.url }}'>
@@ -20,4 +20,4 @@
 {% if not row.idsubdatatable and column=='label' and row.metadata.url is not empty %}
     </a>
 {% endif %}
-{% if row.metadata[tooltipIndex] is defined %}</span>{% endif %}
\ No newline at end of file
+{% if row.metadata[tooltipIndex] is defined %}</span>{% endif %}