diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/ClientUtils.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/ClientUtils.mustache
index f756a2c86ae..568b5b8c936 100755
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/ClientUtils.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/ClientUtils.mustache
@@ -2,6 +2,7 @@
 
 using System;
 using System.Collections;
+using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Text;
@@ -97,7 +98,7 @@ namespace {{packageName}}.Client
             if (obj is ICollection collection)
                 return string.Join(",", collection.Cast<object>());
 
-            return Convert.ToString(obj);
+            return Convert.ToString(obj, CultureInfo.InvariantCulture);
         }
 
         /// <summary>