diff --git a/arch/s390/Makefile b/arch/s390/Makefile
index dac821cfcd43..64c2fe9dcfbe 100644
--- a/arch/s390/Makefile
+++ b/arch/s390/Makefile
@@ -21,7 +21,7 @@ KBUILD_CFLAGS	+= -m64
 KBUILD_AFLAGS	+= -m64
 UTS_MACHINE	:= s390x
 STACK_SIZE	:= 16384
-CHECKFLAGS	+= -D__s390__ -D__s390x__
+CHECKFLAGS	+= -D__s390__ -D__s390x__ -mbig-endian
 
 export LD_BFD