diff --git a/install-dev/upgrade/php/deactivate_custom_modules.php b/install-dev/upgrade/php/deactivate_custom_modules.php
index 8b6bc098b..88c44a7bc 100644
--- a/install-dev/upgrade/php/deactivate_custom_modules.php
+++ b/install-dev/upgrade/php/deactivate_custom_modules.php
@@ -41,6 +41,10 @@ function deactivate_custom_modules()
 	}
 
 	$module_list_xml = _PS_ROOT_DIR_.DIRECTORY_SEPARATOR.'config'.DIRECTORY_SEPARATOR.'modules_list.xml';
+
+	if (!file_exists($module_list_xml))
+		return false;
+
 	$nativeModules = simplexml_load_file($module_list_xml);
 	$nativeModules = $nativeModules->modules;
 	foreach ($nativeModules as $nativeModulesType)