diff --git a/configs/pengwyn_defconfig b/configs/pengwyn_defconfig
index 6d4d8ad..8693dea 100644
--- a/configs/pengwyn_defconfig
+++ b/configs/pengwyn_defconfig
@@ -56,4 +56,5 @@
 CONFIG_USB_MUSB_GADGET=y
 CONFIG_USB_STORAGE=y
 CONFIG_USB_GADGET=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y