diff --git a/library/ZendAfi/Form/Redmine/Issue.php b/library/ZendAfi/Form/Redmine/Issue.php
index e494738210258d04d3d42e2141cbaca2009c7fd8..396ceb1dd78d9100691717acdf5dfaee915abf5b 100644
--- a/library/ZendAfi/Form/Redmine/Issue.php
+++ b/library/ZendAfi/Form/Redmine/Issue.php
@@ -113,7 +113,7 @@ class ZendAfi_Form_Redmine_Issue extends ZendAfi_Form {
         ->addElement('textarea',
                      'technical_informations',
                      ['label' => $this->_('Informations techniques'),
-                      'rows' => 4,
+                      'rows' => 6,
                       'cols' => 70,
                       'required' => false,
                       'readonly' => 'readonly',
diff --git a/public/admin/skins/bokeh74/form.css b/public/admin/skins/bokeh74/form.css
index 46148525ef829da91d7a27b842611e9839cc0fae..09f121a05d1697b96cc2fc177ae3f3151ec96ebd 100644
--- a/public/admin/skins/bokeh74/form.css
+++ b/public/admin/skins/bokeh74/form.css
@@ -158,3 +158,8 @@ body .ui-tabs .ui-tabs-nav > .ui-tabs-active > a.modified,
 body .ui-tabs .ui-tabs-nav > .ui-state-default > a.modified {
     color: var(--error-text);
 }
+
+.admin-form [readonly="readonly"] {
+    cursor: default;
+    background-color: var(--main-background);
+}