diff --git a/boards/arm/stm32/stm32f103-minimum/configs/sensors/defconfig b/boards/arm/stm32/stm32f103-minimum/configs/sensors/defconfig
index 665b4613ea..7da4a13ce1 100644
--- a/boards/arm/stm32/stm32f103-minimum/configs/sensors/defconfig
+++ b/boards/arm/stm32/stm32f103-minimum/configs/sensors/defconfig
@@ -35,6 +35,7 @@ CONFIG_I2C_DRIVER=y
 CONFIG_I2C_RESET=y
 CONFIG_INIT_ENTRYPOINT="nsh_main"
 CONFIG_LIBC_FLOATINGPOINT=y
+CONFIG_LTO_FULL=y
 CONFIG_NSH_ARCHINIT=y
 CONFIG_NSH_BUILTIN_APPS=y
 CONFIG_NSH_FILEIOSIZE=1024