diff --git a/sadump.c b/sadump.c
index 0d7a935..490eb6c 100644
--- a/sadump.c
+++ b/sadump.c
@@ -278,7 +278,7 @@ restart:
 		}
 
 		if (memcmp(&sph->time_stamp, &smh->time_stamp,
-			   sizeof(efi_guid_t)) != 0) {
+			   sizeof(efi_time_t)) != 0) {
 			struct tm tm;
 			if (CRASHDEBUG(1))
 				error(INFO, "sadump: time stamp mismatch\n"