diff --git a/libusb/os/openbsd_usb.c b/libusb/os/openbsd_usb.c
index 7e8197d..74d2c0f 100644
--- a/libusb/os/openbsd_usb.c
+++ b/libusb/os/openbsd_usb.c
@@ -285,7 +285,7 @@
 
 	len = MIN(len, UGETW(ucd->wTotalLength));
 
-	usbi_dbg("len %d", len);
+	usbi_dbg("len %zu", len);
 
 	memcpy(buf, dpriv->cdesc, len);
 
@@ -310,7 +310,7 @@
 	udf.udf_size = len;
 	udf.udf_data = buf;
 
-	usbi_dbg("index %d, len %d", udf.udf_config_index, len);
+	usbi_dbg("index %d, len %zu", udf.udf_config_index, len);
 
 	if (ioctl(fd, USB_DEVICE_GET_FDESC, &udf) < 0) {
 		err = errno;
diff --git a/libusb/version_nano.h b/libusb/version_nano.h
index a9137ea..78b74e0 100644
--- a/libusb/version_nano.h
+++ b/libusb/version_nano.h
@@ -1 +1 @@
-#define LIBUSB_NANO 11381
+#define LIBUSB_NANO 11384