diff --git a/install-dev/upgrade/php/drop_image_type_non_unique_index.php b/install-dev/upgrade/php/drop_image_type_non_unique_index.php
index 5a6c96eed..ad6e0ec4b 100644
--- a/install-dev/upgrade/php/drop_image_type_non_unique_index.php
+++ b/install-dev/upgrade/php/drop_image_type_non_unique_index.php
@@ -27,7 +27,7 @@
 
 function drop_image_type_non_unique_index()
 {
-	$index = Db::getInstance()->executeS('SHOW index FROM `'._DB_PREFIX_.'image_type where column_name = "name" and non_unique=1');
+	$index = Db::getInstance()->executeS('SHOW index FROM `'._DB_PREFIX_.'image_type` where column_name = "name" and non_unique=1');
 	// do not use pSql, this function is not defined
 	Db::getInstance()->execute('ALTER TABLE `'._DB_PREFIX_.'image_type` DROP INDEX "'.$index.'"');
 }