diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index e51b2314f5c9..a8b8ab80bc77 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -734,6 +734,7 @@ int usb_add_config(struct usb_composite_dev *cdev,
 
 	INIT_LIST_HEAD(&config->functions);
 	config->next_interface_id = 0;
+	memset(config->interface, 0, sizeof(config->interface));
 
 	status = bind(config);
 	if (status < 0) {