diff --git a/dotnet/src/Microsoft.Agents.AI/Functions/ContextualFunctionProvider.cs b/dotnet/src/Microsoft.Agents.AI/Functions/ContextualFunctionProvider.cs
index aee04ca443..8aba47b7d9 100644
--- a/dotnet/src/Microsoft.Agents.AI/Functions/ContextualFunctionProvider.cs
+++ b/dotnet/src/Microsoft.Agents.AI/Functions/ContextualFunctionProvider.cs
@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 using System;
 using System.Collections.Concurrent;
diff --git a/dotnet/src/Microsoft.Agents.AI/Functions/ContextualFunctionProviderOptions.cs b/dotnet/src/Microsoft.Agents.AI/Functions/ContextualFunctionProviderOptions.cs
index f47723ecc0..74b8027b8b 100644
--- a/dotnet/src/Microsoft.Agents.AI/Functions/ContextualFunctionProviderOptions.cs
+++ b/dotnet/src/Microsoft.Agents.AI/Functions/ContextualFunctionProviderOptions.cs
@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 using System;
 using System.Collections.Generic;
diff --git a/dotnet/src/Microsoft.Agents.AI/Functions/FunctionStore.cs b/dotnet/src/Microsoft.Agents.AI/Functions/FunctionStore.cs
index cd116295bc..45e69bb327 100644
--- a/dotnet/src/Microsoft.Agents.AI/Functions/FunctionStore.cs
+++ b/dotnet/src/Microsoft.Agents.AI/Functions/FunctionStore.cs
@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 using System;
 using System.Collections.Generic;
diff --git a/dotnet/src/Microsoft.Agents.AI/Functions/FunctionStoreLoggingExtensions.cs b/dotnet/src/Microsoft.Agents.AI/Functions/FunctionStoreLoggingExtensions.cs
index ed8ebc5e45..ac13d83e88 100644
--- a/dotnet/src/Microsoft.Agents.AI/Functions/FunctionStoreLoggingExtensions.cs
+++ b/dotnet/src/Microsoft.Agents.AI/Functions/FunctionStoreLoggingExtensions.cs
@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
diff --git a/dotnet/src/Microsoft.Agents.AI/Functions/FunctionStoreOptions.cs b/dotnet/src/Microsoft.Agents.AI/Functions/FunctionStoreOptions.cs
index 58ab84221d..3665efb579 100644
--- a/dotnet/src/Microsoft.Agents.AI/Functions/FunctionStoreOptions.cs
+++ b/dotnet/src/Microsoft.Agents.AI/Functions/FunctionStoreOptions.cs
@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 using System;
 using System.Threading;
diff --git a/dotnet/tests/Microsoft.Agents.AI.UnitTests/Functions/ContextualFunctionProviderTests.cs b/dotnet/tests/Microsoft.Agents.AI.UnitTests/Functions/ContextualFunctionProviderTests.cs
index 280c07443d..2eaa005e87 100644
--- a/dotnet/tests/Microsoft.Agents.AI.UnitTests/Functions/ContextualFunctionProviderTests.cs
+++ b/dotnet/tests/Microsoft.Agents.AI.UnitTests/Functions/ContextualFunctionProviderTests.cs
@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 using System;
 using System.Collections.Generic;
diff --git a/dotnet/tests/Microsoft.Agents.AI.UnitTests/Functions/FunctionStoreTests.cs b/dotnet/tests/Microsoft.Agents.AI.UnitTests/Functions/FunctionStoreTests.cs
index cacdf98ade..ebc84f4c3b 100644
--- a/dotnet/tests/Microsoft.Agents.AI.UnitTests/Functions/FunctionStoreTests.cs
+++ b/dotnet/tests/Microsoft.Agents.AI.UnitTests/Functions/FunctionStoreTests.cs
@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 using System;
 using System.Collections.Generic;