diff --git a/classes/module/Module.php b/classes/module/Module.php
index 32bcde732..e68ccb5ae 100644
--- a/classes/module/Module.php
+++ b/classes/module/Module.php
@@ -1310,7 +1310,7 @@ abstract class ModuleCore
 		FROM `'._DB_PREFIX_.'module` m
 		'.($frontend ? 'LEFT JOIN `'._DB_PREFIX_.'module_country` mc ON (m.`id_module` = mc.`id_module` AND mc.id_shop = '.(int)$context->shop->id.')' : '').'
 		'.($frontend ? 'INNER JOIN `'._DB_PREFIX_.'module_group` mg ON (m.`id_module` = mg.`id_module` AND mg.id_shop = '.(int)$context->shop->id.')' : '').'
-		'.(isset($context->customer) ? 'INNER JOIN `'._DB_PREFIX_.'customer_group` cg on (cg.`id_group` = mg.`id_group`AND cg.`id_customer` = '.(int)$context->customer->id.')' : '').'
+		'.($frontend && isset($context->customer) ? 'INNER JOIN `'._DB_PREFIX_.'customer_group` cg on (cg.`id_group` = mg.`id_group`AND cg.`id_customer` = '.(int)$context->customer->id.')' : '').'
 		LEFT JOIN `'._DB_PREFIX_.'hook_module` hm ON hm.`id_module` = m.`id_module`
 		LEFT JOIN `'._DB_PREFIX_.'hook` h ON hm.`id_hook` = h.`id_hook`
 		WHERE h.`name` = \''.pSQL($hookPayment).'\'