diff --git a/usbdev.c b/usbdev.c
index d793b65..764ac04 100644
--- a/usbdev.c
+++ b/usbdev.c
@@ -54,7 +54,7 @@
 			continue;
 		}
 
-		if ((desc.idVendor != vid) && (desc.idProduct != pid))
+		if ((desc.idVendor != vid) || (desc.idProduct != pid))
 			continue;
 
 		msg_pdbg("Found USB device %04"PRIx16":%04"PRIx16" at address %d-%d.\n",