diff --git a/libcpu/Kconfig b/libcpu/Kconfig
index 5fcb19ceec..eebb26e281 100644
--- a/libcpu/Kconfig
+++ b/libcpu/Kconfig
@@ -101,6 +101,7 @@ config ARCH_ARM_CORTEX_M7
     select ARCH_ARM_CORTEX_M
     select RT_USING_CPU_FFS
     select RT_USING_CACHE
+    select RT_USING_HW_ATOMIC
 
 config ARCH_ARM_CORTEX_M85
     bool