diff --git a/configs/slimbootloader_defconfig b/configs/slimbootloader_defconfig
index e3c81a5..5cfbaa2 100644
--- a/configs/slimbootloader_defconfig
+++ b/configs/slimbootloader_defconfig
@@ -18,6 +18,7 @@
 CONFIG_EFI_PARTITION=y
 CONFIG_ENV_OVERWRITE=y
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+CONFIG_TFTP_TSIZE=y
 CONFIG_REGMAP=y
 CONFIG_SYSCON=y
 # CONFIG_PCI_PNP is not set