diff --git a/common/usb.c b/common/usb.c
index 9f67cc1e8e..c7b8b0ee5a 100644
--- a/common/usb.c
+++ b/common/usb.c
@@ -456,7 +456,7 @@ static int usb_parse_config(struct usb_device *dev,
 			}
 			epno = dev->config.if_desc[ifno].no_of_ep;
 			if_desc = &dev->config.if_desc[ifno];
-			if (epno > USB_MAXENDPOINTS) {
+			if (epno >= USB_MAXENDPOINTS) {
 				printf("Interface %d has too many endpoints!\n",
 					if_desc->desc.bInterfaceNumber);
 				return -EINVAL;