diff --git a/projects/clr/opencl/khronos/headers/opencl1.2/CL/cl.hpp b/projects/clr/opencl/khronos/headers/opencl1.2/CL/cl.hpp
index f949a58691..3407b6e11e 100644
--- a/projects/clr/opencl/khronos/headers/opencl1.2/CL/cl.hpp
+++ b/projects/clr/opencl/khronos/headers/opencl1.2/CL/cl.hpp
@@ -1,3 +1,4 @@
+/* Modifications Copyright (C) 2010-2022 Advanced Micro Devices, Inc. */
 /*******************************************************************************
  * Copyright (c) 2008-2015 The Khronos Group Inc.
  *
diff --git a/projects/clr/opencl/khronos/headers/opencl2.0/CL/cl.hpp b/projects/clr/opencl/khronos/headers/opencl2.0/CL/cl.hpp
index f949a58691..3407b6e11e 100644
--- a/projects/clr/opencl/khronos/headers/opencl2.0/CL/cl.hpp
+++ b/projects/clr/opencl/khronos/headers/opencl2.0/CL/cl.hpp
@@ -1,3 +1,4 @@
+/* Modifications Copyright (C) 2010-2022 Advanced Micro Devices, Inc. */
 /*******************************************************************************
  * Copyright (c) 2008-2015 The Khronos Group Inc.
  *
diff --git a/projects/clr/opencl/khronos/headers/opencl2.1/CL/cl.hpp b/projects/clr/opencl/khronos/headers/opencl2.1/CL/cl.hpp
index f949a58691..3407b6e11e 100644
--- a/projects/clr/opencl/khronos/headers/opencl2.1/CL/cl.hpp
+++ b/projects/clr/opencl/khronos/headers/opencl2.1/CL/cl.hpp
@@ -1,3 +1,4 @@
+/* Modifications Copyright (C) 2010-2022 Advanced Micro Devices, Inc. */
 /*******************************************************************************
  * Copyright (c) 2008-2015 The Khronos Group Inc.
  *
diff --git a/projects/clr/opencl/khronos/headers/opencl2.2/CL/cl.hpp b/projects/clr/opencl/khronos/headers/opencl2.2/CL/cl.hpp
index 5cfd7fb184..e09743ff49 100644
--- a/projects/clr/opencl/khronos/headers/opencl2.2/CL/cl.hpp
+++ b/projects/clr/opencl/khronos/headers/opencl2.2/CL/cl.hpp
@@ -1,3 +1,4 @@
+/* Modifications Copyright (C) 2010-2022 Advanced Micro Devices, Inc. */
 /*******************************************************************************
  * Copyright (c) 2008-2015 The Khronos Group Inc.
  *