diff --git a/arch/arm/timer/Makefile b/arch/arm/timer/Makefile
index e95d1041037..5878c4e3433 100644
--- a/arch/arm/timer/Makefile
+++ b/arch/arm/timer/Makefile
@@ -1,6 +1,6 @@
 EXTRA_CFLAGS +=-I$(srctree)/include/bsp
 EXTRA_CFLAGS +=-I$(srctree)/include/drivers
-EXTRA_CFLAGS +=-I$(srctree)/arch/arm/fsl_frdm_k64f
+EXTRA_CFLAGS +=-I$(srctree)/arch/$(ARCH)/$(strip $(CONFIG_BSP_DIR))
 
 obj-y = systick.o
 obj-$(CONFIG_GDB_INFO) += systick_gdb.o