diff --git a/dotnet/src/Microsoft.Agents.AI/Functions/ContextualFunctionProvider.cs b/dotnet/src/Microsoft.Agents.AI/Functions/ContextualFunctionProvider.cs
index a2b0dc02d3..6caf8b1449 100644
--- a/dotnet/src/Microsoft.Agents.AI/Functions/ContextualFunctionProvider.cs
+++ b/dotnet/src/Microsoft.Agents.AI/Functions/ContextualFunctionProvider.cs
@@ -61,7 +61,7 @@ public sealed class ContextualFunctionProvider : AIContextProvider
         int maxNumberOfFunctions,
         ContextualFunctionProviderOptions? options = null,
         ILoggerFactory? loggerFactory = null)
-        : this(vectorStore, vectorDimensions, functions, maxNumberOfFunctions, default(JsonElement), options, null, loggerFactory)
+        : this(vectorStore, vectorDimensions, functions, maxNumberOfFunctions, default, options, null, loggerFactory)
     {
     }