diff --git a/tests/src/test_bitinputarchive.cpp b/tests/src/test_bitinputarchive.cpp
index 17de3045..0e146484 100644
--- a/tests/src/test_bitinputarchive.cpp
+++ b/tests/src/test_bitinputarchive.cpp
@@ -1032,7 +1032,7 @@ TEMPLATE_TEST_CASE( "BitInputArchive: Extracting an archive to the filesystem sh
     REQUIRE( expectedModifiedTime.dwHighDateTime != 0 );
 #else
     namespace chrono = std::chrono;
-    const auto expectedModifiedTime = item.lastWriteTime().time_since_epoch();
+    const auto expectedModifiedTime = chrono::duration_cast< chrono::seconds >( item.lastWriteTime().time_since_epoch() );
 #endif
 
     TempTestDirectory testOutDir{ "test_bitinputarchive" };
@@ -1051,10 +1051,10 @@ TEMPLATE_TEST_CASE( "BitInputArchive: Extracting an archive to the filesystem sh
     REQUIRE( CompareFileTime( &accessTime, &expectedAccessTime ) == 0 );
     REQUIRE( CompareFileTime( &modifiedTime, &expectedModifiedTime ) == 0 );
 #else
-    const auto modifiedTime = fs::last_write_time( expectedFile ).time_since_epoch();
+    const auto modifiedTime = chrono::duration_cast< chrono::seconds >( fs::last_write_time( expectedFile ).time_since_epoch() );
     // Note: Using count() since Catch2 cannot print std::chrono::duration objects.
-    INFO( "System clock's now: " << static_cast< std::uint64_t >( std::chrono::system_clock::now().time_since_epoch().count() ) )
-    INFO( "File clock's now: " << static_cast< std::uint64_t >( fs::file_time_type::clock::now().time_since_epoch().count() ) )
+    INFO( "System clock's now: " << static_cast< std::uint64_t >( chrono::duration_cast< chrono::seconds >( chrono::system_clock::now().time_since_epoch() ).count() ) )
+    INFO( "File clock's now:   " << static_cast< std::uint64_t >( chrono::duration_cast< chrono::seconds >( fs::file_time_type::clock::now().time_since_epoch() ).count() ) )
     REQUIRE( modifiedTime.count() == expectedModifiedTime.count() );
 #endif