diff --git a/libcxx/test/std/time/time.hms/time.hms.members/seconds.pass.cpp b/libcxx/test/std/time/time.hms/time.hms.members/seconds.pass.cpp
--- a/libcxx/test/std/time/time.hms/time.hms.members/seconds.pass.cpp
+++ b/libcxx/test/std/time/time.hms/time.hms.members/seconds.pass.cpp
@@ -23,7 +23,7 @@
 #include "test_macros.h"
 
 template <typename Duration>
-constexpr long check_seconds(Duration d)
+constexpr long long check_seconds(Duration d)
 {
     using HMS = std::chrono::hh_mm_ss<Duration>;
     ASSERT_SAME_TYPE(std::chrono::seconds, decltype(std::declval<HMS>().seconds()));
diff --git a/libcxx/test/std/time/time.hms/time.hms.members/subseconds.pass.cpp b/libcxx/test/std/time/time.hms/time.hms.members/subseconds.pass.cpp
--- a/libcxx/test/std/time/time.hms/time.hms.members/subseconds.pass.cpp
+++ b/libcxx/test/std/time/time.hms/time.hms.members/subseconds.pass.cpp
@@ -23,7 +23,7 @@
 #include "test_macros.h"
 
 template <typename Duration>
-constexpr long check_subseconds(Duration d)
+constexpr long long check_subseconds(Duration d)
 {
     using HMS = std::chrono::hh_mm_ss<Duration>;
     ASSERT_SAME_TYPE(typename HMS::precision, decltype(std::declval<HMS>().subseconds()));