diff --git a/src/mscorlib/src/System/TimeZoneInfo.cs b/src/mscorlib/src/System/TimeZoneInfo.cs index 85f28ca67685..8d91c4a7802e 100644 --- a/src/mscorlib/src/System/TimeZoneInfo.cs +++ b/src/mscorlib/src/System/TimeZoneInfo.cs @@ -973,7 +973,7 @@ static public TimeZoneInfo FromSerializedString(string source) { // GetHashCode - // public override int GetHashCode() { - return m_id.ToUpper(CultureInfo.InvariantCulture).GetHashCode(); + return StringComparer.OrdinalIgnoreCase.GetHashCode(m_id); } //