diff --git a/include/linux/time64.h b/include/linux/time64.h
index 05634afba0db62f0d4bebf743fed5daf7ce2ffe1..5926bdd4167ff063385168c36b0add92af1ef77d 100644
--- a/include/linux/time64.h
+++ b/include/linux/time64.h
@@ -67,7 +67,7 @@ static inline struct timespec64 timespec64_add(struct timespec64 lhs,
 						struct timespec64 rhs)
 {
 	struct timespec64 ts_delta;
-	set_normalized_timespec64(&ts_delta, lhs.tv_sec + rhs.tv_sec,
+	set_normalized_timespec64(&ts_delta, (timeu64_t)lhs.tv_sec + rhs.tv_sec,
 				lhs.tv_nsec + rhs.tv_nsec);
 	return ts_delta;
 }