diff --git a/toolchain/toolchain-buildroot/Config.in b/toolchain/toolchain-buildroot/Config.in
index ea290eb97a..0c4080111a 100644
--- a/toolchain/toolchain-buildroot/Config.in
+++ b/toolchain/toolchain-buildroot/Config.in
@@ -94,6 +94,9 @@ config BR2_TOOLCHAIN_BUILDROOT_MUSL
 	depends on !BR2_powerpc_SPE # not supported, build breaks
 	# Unsupported for MIPS R6
 	depends on !BR2_mips_32r6 && !BR2_mips_64r6
+	# sh2 nommu is supported by musl, but we don't have support
+	# for it in Buildroot.
+	depends on BR2_USE_MMU
 	select BR2_TOOLCHAIN_USES_MUSL
 	help
 	  This option selects musl as the C library for the