diff --git a/components/core/JsInterop/modules/components/OverlayPosition.cs b/components/core/JsInterop/modules/components/OverlayPosition.cs
index 11cee2ca..99769aec 100644
--- a/components/core/JsInterop/modules/components/OverlayPosition.cs
+++ b/components/core/JsInterop/modules/components/OverlayPosition.cs
@@ -1,4 +1,6 @@
-namespace AntDesign.Core.JsInterop.Modules.Components
+using System.Globalization;
+
+namespace AntDesign.Core.JsInterop.Modules.Components
 {
     public class OverlayPosition
     {
@@ -22,7 +24,7 @@
             if (value is null)
                 return "unset;";
             else
-                return value.ToString() + "px;";
+                return string.Format(CultureInfo.InvariantCulture, "{0}px;", value);
         }
     }
 }