diff --git a/configs/s6lx9_microboard_defconfig b/configs/s6lx9_microboard_defconfig
index 05b4443521..c54f3f491e 100644
--- a/configs/s6lx9_microboard_defconfig
+++ b/configs/s6lx9_microboard_defconfig
@@ -1,11 +1,5 @@
 BR2_microblaze=y
 BR2_microblazeel=y
-BR2_TOOLCHAIN_EXTERNAL=y
-BR2_TOOLCHAIN_EXTERNAL_XILINX_MICROBLAZEEL_V2=y
-BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
-BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX="microblazeel-unknown-linux-gnu"
-BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
-BR2_TOOLCHAIN_EXTERNAL_CXX=y
 BR2_TARGET_GENERIC_GETTY_PORT="ttyUL0"
 # BR2_TARGET_ROOTFS_TAR is not set
 BR2_TARGET_ROOTFS_INITRAMFS=y