diff --git a/libusb/os/darwin_usb.c b/libusb/os/darwin_usb.c
index 83a62a3..cdc88a4 100644
--- a/libusb/os/darwin_usb.c
+++ b/libusb/os/darwin_usb.c
@@ -508,7 +508,7 @@ static int darwin_get_active_config_descriptor(struct libusb_device *dev, unsign
   int config_index;
 
   if (0 == priv->active_config)
-    return LIBUSB_ERROR_INVALID_PARAM;
+    return LIBUSB_ERROR_NOT_FOUND;
 
   config_index = get_configuration_index (dev, priv->active_config);
   if (config_index < 0)
diff --git a/libusb/version_nano.h b/libusb/version_nano.h
index 82c30cc..7871963 100644
--- a/libusb/version_nano.h
+++ b/libusb/version_nano.h
@@ -1 +1 @@
-#define LIBUSB_NANO 10663
+#define LIBUSB_NANO 10664