diff --git a/configs/minnowboard_max_defconfig b/configs/minnowboard_max_defconfig
index 674b144..db6e595 100644
--- a/configs/minnowboard_max_defconfig
+++ b/configs/minnowboard_max_defconfig
@@ -9,6 +9,9 @@
 
 # Linux headers same as kernel, a 4.12 series
 BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_12=y
+# Needed for grub2
+BR2_TOOLCHAIN_BUILDROOT_WCHAR=y
+
 BR2_PACKAGE_HOST_DOSFSTOOLS=y
 BR2_PACKAGE_HOST_GENIMAGE=y
 BR2_PACKAGE_HOST_MTOOLS=y