diff --git a/htdocs/theme/md/info-box.inc.php b/htdocs/theme/md/info-box.inc.php
index 6a313ace567..65ff1811269 100644
--- a/htdocs/theme/md/info-box.inc.php
+++ b/htdocs/theme/md/info-box.inc.php
@@ -10,9 +10,6 @@ include_once DOL_DOCUMENT_ROOT.'/core/lib/functions2.lib.php';
 $prefix = '';
 if (!empty($conf->global->THEME_INFOBOX_COLOR_ON_BACKGROUND)) $prefix = 'background-';
 
-$prefix = '';
-if (!empty($conf->global->THEME_INFOBOX_COLOR_ON_BACKGROUND)) $prefix = 'background-';
-
 if (!isset($conf->global->THEME_SATURATE_RATIO)) $conf->global->THEME_SATURATE_RATIO = 0.5;
 if (GETPOSTISSET('THEME_SATURATE_RATIO')) $conf->global->THEME_SATURATE_RATIO = GETPOST('THEME_SATURATE_RATIO', 'int');