diff --git a/configs/milkv_duo_musl_riscv64_64mb_defconfig b/configs/milkv_duo_musl_riscv64_64mb_defconfig
index 1add2eacdf6e..48b77ae48db2 100644
--- a/configs/milkv_duo_musl_riscv64_64mb_defconfig
+++ b/configs/milkv_duo_musl_riscv64_64mb_defconfig
@@ -9,6 +9,7 @@ BR2_KERNEL_HEADERS_5_10=y
 # Using gcc13 to have t-head's optimization and features
 BR2_GCC_VERSION_13_X=y
 BR2_TOOLCHAIN_BUILDROOT_CXX=y
+BR2_TOOLCHAIN_BUILDROOT_MUSL=y
 BR2_TARGET_OPTIMIZATION="-march=rv64imafdc_xtheadba_xtheadbb_xtheadbs_xtheadcmo_xtheadcondmov_xtheadfmemidx_xtheadfmv_xtheadint_xtheadmac_xtheadmemidx_xtheadmempair_xtheadsync"
 BR2_TARGET_LDFLAGS="-march=rv64imafdc_xtheadba_xtheadbb_xtheadbs_xtheadcmo_xtheadcondmov_xtheadfmemidx_xtheadfmv_xtheadint_xtheadmac_xtheadmemidx_xtheadmempair_xtheadsync"
 
diff --git a/configs/milkv_duo_musl_riscv64_defconfig b/configs/milkv_duo_musl_riscv64_defconfig
index 074d9388e85c..d29fd0faf442 100644
--- a/configs/milkv_duo_musl_riscv64_defconfig
+++ b/configs/milkv_duo_musl_riscv64_defconfig
@@ -9,6 +9,7 @@ BR2_KERNEL_HEADERS_5_10=y
 # Using gcc13 to have t-head's optimization and features
 BR2_GCC_VERSION_13_X=y
 BR2_TOOLCHAIN_BUILDROOT_CXX=y
+BR2_TOOLCHAIN_BUILDROOT_MUSL=y
 BR2_TARGET_OPTIMIZATION="-march=rv64imafdc_xtheadba_xtheadbb_xtheadbs_xtheadcmo_xtheadcondmov_xtheadfmemidx_xtheadfmv_xtheadint_xtheadmac_xtheadmemidx_xtheadmempair_xtheadsync"
 BR2_TARGET_LDFLAGS="-march=rv64imafdc_xtheadba_xtheadbb_xtheadbs_xtheadcmo_xtheadcondmov_xtheadfmemidx_xtheadfmv_xtheadint_xtheadmac_xtheadmemidx_xtheadmempair_xtheadsync"