diff --git a/src/Common/src/CoreLib/System/Globalization/CultureData.Windows.cs b/src/Common/src/CoreLib/System/Globalization/CultureData.Windows.cs
index 393f983bba59..75f78620d5df 100644
--- a/src/Common/src/CoreLib/System/Globalization/CultureData.Windows.cs
+++ b/src/Common/src/CoreLib/System/Globalization/CultureData.Windows.cs
@@ -517,7 +517,7 @@ private static int ConvertFirstDayOfWeekMonToSun(int iTemp)
 
 
         // Context for EnumCalendarInfoExEx callback.
-        private class EnumLocaleData
+        private struct EnumLocaleData
         {
             public string regionName;
             public string cultureName;