diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 2ba434667d..dd6ce83af0 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -426,7 +426,8 @@ config ARMV7M_MPU
 
 config ARMV7M_MPU_NREGIONS
 	int "Number of MPU regions"
-	default 8
+	default 16 if ARCH_CORTEXM7
+	default 8 if !ARCH_CORTEXM7
 	depends on ARMV7M_MPU
 	---help---
 		This is the number of protection regions supported by the MPU.