diff --git a/install-dev/php/remove_tab.php b/install-dev/php/remove_tab.php
index 380b5ff91..aed55c88d 100644
--- a/install-dev/php/remove_tab.php
+++ b/install-dev/php/remove_tab.php
@@ -5,7 +5,7 @@ function remove_tab($tabname)
 {
 	Db::getInstance()->execute('
 	DELETE t, l
-	FROM `PREFIX_tab` t LEFT JOIN `PREFIX_tab_lang` l ON (t.id_tab = l.id_tab)
+	FROM `'._DB_PREFIX_.'tab` t LEFT JOIN `'._DB_PREFIX_.'tab_lang` l ON (t.id_tab = l.id_tab)
 	WHERE t.`class_name` = '.pSQL($tabname));
 }
 
diff --git a/install-new/upgrade/functions/remove_tab.php b/install-new/upgrade/functions/remove_tab.php
index 380b5ff91..aed55c88d 100644
--- a/install-new/upgrade/functions/remove_tab.php
+++ b/install-new/upgrade/functions/remove_tab.php
@@ -5,7 +5,7 @@ function remove_tab($tabname)
 {
 	Db::getInstance()->execute('
 	DELETE t, l
-	FROM `PREFIX_tab` t LEFT JOIN `PREFIX_tab_lang` l ON (t.id_tab = l.id_tab)
+	FROM `'._DB_PREFIX_.'tab` t LEFT JOIN `'._DB_PREFIX_.'tab_lang` l ON (t.id_tab = l.id_tab)
 	WHERE t.`class_name` = '.pSQL($tabname));
 }