diff --git a/drivers/net/wimax/i2400m/usb-fw.c b/drivers/net/wimax/i2400m/usb-fw.c
index f162c815d505..b59aee0ee649 100644
--- a/drivers/net/wimax/i2400m/usb-fw.c
+++ b/drivers/net/wimax/i2400m/usb-fw.c
@@ -330,8 +330,8 @@ ssize_t i2400mu_bus_bm_wait_for_ack(struct i2400m *i2400m,
 out:
 	if (do_autopm)
 		usb_autopm_put_interface(i2400mu->usb_iface);
-	d_fnend(8, dev, "(i2400m %p ack %p size %zu) = %zd\n",
-		i2400m, ack, ack_size, result);
+	d_fnend(8, dev, "(i2400m %p ack %p size %zu) = %ld\n",
+		i2400m, ack, ack_size, (long) result);
 	return result;
 
 error_exceeded: