diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index d273294afd..0d1802b9f9 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -221,6 +221,7 @@ config CPU_V7M
 	select THUMB2_KERNEL
 	select SYS_CACHE_SHIFT_5
 	select SYS_ARM_MPU
+	select SYS_THUMB_BUILD
 
 config CPU_V7R
 	bool
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 4d6d276137..680c6e8516 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -16,6 +16,7 @@ arch-$(CONFIG_CPU_ARM1136)	=-march=armv5
 arch-$(CONFIG_CPU_ARM1176)	=-march=armv5t
 arch-$(CONFIG_CPU_V7A)		=$(call cc-option, -march=armv7-a, \
 				 $(call cc-option, -march=armv7, -march=armv5))
+arch-$(CONFIG_CPU_V7M)		=-march=armv7-m
 arch-$(CONFIG_CPU_V7R)		=-march=armv7-r
 arch-$(CONFIG_ARM64)		=-march=armv8-a
 
diff --git a/arch/arm/cpu/armv7m/config.mk b/arch/arm/cpu/armv7m/config.mk
index 4e46df5a28..f50964cfb9 100644
--- a/arch/arm/cpu/armv7m/config.mk
+++ b/arch/arm/cpu/armv7m/config.mk
@@ -3,4 +3,4 @@
 # (C) Copyright 2015
 # Kamil Lulko, <kamil.lulko@gmail.com>
 
-PLATFORM_CPPFLAGS += -march=armv7-m -mthumb -mno-unaligned-access
+PLATFORM_CPPFLAGS += -mno-unaligned-access