diff --git a/arch/s390/Makefile b/arch/s390/Makefile
index 68441e0e74b6..143ed8e154af 100644
--- a/arch/s390/Makefile
+++ b/arch/s390/Makefile
@@ -19,7 +19,7 @@ CFLAGS		+= -m31
 AFLAGS		+= -m31
 UTS_MACHINE	:= s390
 STACK_SIZE	:= 8192
-CHECKFLAGS	+= -D__s390__
+CHECKFLAGS	+= -D__s390__ -msize-long
 else
 LDFLAGS		:= -m elf64_s390
 MODFLAGS	+= -fpic -D__PIC__