diff --git a/configs/at91sam9rlek_mmc_defconfig b/configs/at91sam9rlek_mmc_defconfig
index 9a40c41..edf9881 100644
--- a/configs/at91sam9rlek_mmc_defconfig
+++ b/configs/at91sam9rlek_mmc_defconfig
@@ -42,3 +42,4 @@
 CONFIG_DEBUG_UART_ANNOUNCE=y
 CONFIG_ATMEL_USART=y
 CONFIG_LCD=y
+CONFIG_FAT_WRITE=y