diff --git a/framework/src/Volo.Abp.Core/Volo/Abp/Localization/CultureHelper.cs b/framework/src/Volo.Abp.Core/Volo/Abp/Localization/CultureHelper.cs
index 2ddf9233ba..5485578886 100644
--- a/framework/src/Volo.Abp.Core/Volo/Abp/Localization/CultureHelper.cs
+++ b/framework/src/Volo.Abp.Core/Volo/Abp/Localization/CultureHelper.cs
@@ -38,7 +38,7 @@ namespace Volo.Abp.Localization
 
         public static bool IsRtl
         {
-            get { return Thread.CurrentThread.CurrentUICulture.TextInfo.IsRightToLeft; }
+            get { return CultureInfo.CurrentUICulture.TextInfo.IsRightToLeft; }
         }
         public static bool IsValidCultureCode(string cultureCode)
         {