1 files changed, 2 insertions, 0 deletions

diff --git a/arch/s390/Makefile b/arch/s390/Makefile
index 3cd8dd25c9d7..c1ea6bcb77ce 100644
--- a/arch/s390/Makefile
+++ b/arch/s390/Makefile
@@ -19,6 +19,7 @@ CFLAGS		+= -m31
 AFLAGS          += -m31
 UTS_MACHINE     := s390
 STACK_SIZE      := 8192
+CHECKFLAGS      += -D__s390__
 endif
 
 ifdef CONFIG_ARCH_S390X
@@ -28,6 +29,7 @@ CFLAGS		+= -m64
 AFLAGS          += -m64
 UTS_MACHINE     := s390x
 STACK_SIZE      := 16384
+CHECKFLAGS      += -D__s390__ -D__s390x__
 endif
 
 cflags-$(CONFIG_MARCH_G5)   += $(call cc-option,-march=g5)