diff --git a/configs/stm32f469_disco_sd_defconfig b/configs/stm32f469_disco_sd_defconfig
index c58523217e22..c0dacd5b0c12 100644
--- a/configs/stm32f469_disco_sd_defconfig
+++ b/configs/stm32f469_disco_sd_defconfig
@@ -1,6 +1,7 @@
 BR2_arm=y
 BR2_cortex_m4=y
 BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_15=y
+BR2_UCLIBC_CONFIG_FRAGMENT_FILES="board/stmicroelectronics/common/stm32f4xx/uclibc-fragment.config"
 BR2_GLOBAL_PATCH_DIR="board/stmicroelectronics/stm32f469-disco/patches"
 BR2_DOWNLOAD_FORCE_CHECK_HASHES=y
 BR2_ROOTFS_POST_BUILD_SCRIPT="board/stmicroelectronics/common/stm32f4xx/stm32-post-build.sh board/stmicroelectronics/stm32f469-disco/post-build.sh"
diff --git a/configs/stm32f469_disco_xip_defconfig b/configs/stm32f469_disco_xip_defconfig
index 9124177193f4..e642d8d48908 100644
--- a/configs/stm32f469_disco_xip_defconfig
+++ b/configs/stm32f469_disco_xip_defconfig
@@ -1,6 +1,7 @@
 BR2_arm=y
 BR2_cortex_m4=y
 BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_15=y
+BR2_UCLIBC_CONFIG_FRAGMENT_FILES="board/stmicroelectronics/common/stm32f4xx/uclibc-fragment.config"
 # BR2_UCLIBC_INSTALL_UTILS is not set
 BR2_ENABLE_LTO=y
 BR2_GLOBAL_PATCH_DIR="board/stmicroelectronics/stm32f469-disco/patches"