diff --git a/XMPCore/source/XMPUtils.cpp b/XMPCore/source/XMPUtils.cpp
index 6a4b8948..69568e8a 100644
--- a/XMPCore/source/XMPUtils.cpp
+++ b/XMPCore/source/XMPUtils.cpp
@@ -3345,7 +3345,6 @@ XMPUtils::SetTimeZone ( XMP_DateTime * xmpTime )
 		ansi_localtime ( &now, &tmLocal );
 	} else {
 		tmLocal.tm_year = xmpTime->year - 1900;
-		while ( tmLocal.tm_year < 70 ) tmLocal.tm_year += 4;	// ! Some versions of mktime barf on years before 1970.
 		tmLocal.tm_mon	 = xmpTime->month - 1;
 		tmLocal.tm_mday	 = xmpTime->day;
 	}