diff --git a/Source/Examples/OpenGL/1.x/Picking.cs b/Source/Examples/OpenGL/1.x/Picking.cs
index f9ccc2d6..d3b9a0c5 100644
--- a/Source/Examples/OpenGL/1.x/Picking.cs
+++ b/Source/Examples/OpenGL/1.x/Picking.cs
@@ -235,7 +235,7 @@ namespace Examples.Tutorial
         protected override void OnRenderFrame(FrameEventArgs e)
         {
             GL.Color3(Color.White);
-            GL.Enable(EnableCap.ColorArray);
+            GL.EnableClientState(EnableCap.ColorArray);
 
             #region Pass 1: Draw Object and pick Triangle
             GL.ClearColor(1f, 1f, 1f, 1f); // clears to uint.MaxValue
@@ -261,7 +261,7 @@ namespace Examples.Tutorial
             #endregion Pass 1: Draw Object and pick Triangle
 
             GL.Color3(Color.White);
-            GL.Disable(EnableCap.ColorArray);
+            GL.DisableClientState(EnableCap.ColorArray);
 
             #region Pass 2: Draw Shape
             if (SelectedTriangle == uint.MaxValue)