diff --git a/libusb/os/linux_usbfs.c b/libusb/os/linux_usbfs.c
index 4179b9a..537f0dd 100644
--- a/libusb/os/linux_usbfs.c
+++ b/libusb/os/linux_usbfs.c
@@ -1039,8 +1039,10 @@ static int initialize_device(struct libusb_device *dev, uint8_t busnum,
 		priv->descriptors_len += r;
 	} while (priv->descriptors_len == descriptors_size);
 
-	if (fd != wrapped_fd)
+	if (fd != wrapped_fd) {
 		close(fd);
+		fd = -1;
+	}
 
 	if (priv->descriptors_len < DEVICE_DESC_LENGTH) {
 		usbi_err(ctx, "short descriptor read (%d)",
@@ -1050,7 +1052,7 @@ static int initialize_device(struct libusb_device *dev, uint8_t busnum,
 
 	if (sysfs_dir && sysfs_can_relate_devices)
 	{
-		if (fd != wrapped_fd)
+		if ((fd >= 0) && (fd != wrapped_fd))
 			close(fd);
 		return LIBUSB_SUCCESS;
 	}