diff --git a/arch/s390/include/asm/compat.h b/arch/s390/include/asm/compat.h
index f8c6df6cd1f0..d967ac8d55d0 100644
--- a/arch/s390/include/asm/compat.h
+++ b/arch/s390/include/asm/compat.h
@@ -135,7 +135,7 @@ struct compat_statfs {
 	s32		f_namelen;
 	s32		f_frsize;
 	s32		f_flags;
-	s32		f_spare[5];
+	s32		f_spare[4];
 };
 
 #define COMPAT_RLIM_OLD_INFINITY	0x7fffffff