diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c
index 167135294ca5..d246cb23e341 100644
--- a/arch/s390/kernel/crash_dump.c
+++ b/arch/s390/kernel/crash_dump.c
@@ -42,7 +42,7 @@ struct save_area {
 	u64 fprs[16];
 	u32 fpc;
 	u32 prefix;
-	u64 todpreg;
+	u32 todpreg;
 	u64 timer;
 	u64 todcmp;
 	u64 vxrs_low[16];